packages: Mark the `arguments' field of <package> as thunked.

* guix/packages.scm (<package>): Mark `arguments' as thunked.
  (package-derivation): Adjust accordingly.  Parameterize
  %CURRENT-SYSTEM to SYSTEM, so that arguments can refer to it.

* guix/build-system/gnu.scm (package-with-explicit-inputs): Expect
  `package-arguments' to always return a list, and return a list.
  (package-with-extra-configure-variable): Likewise.
  (static-package): Likewise.
* gnu/packages/base.scm (patch, findutils, gcc-4.7, binutils-boot0,
  gcc-boot0, glibc-final-with-bootstrap-bash, cross-gcc-wrapper,
  static-bash-for-glibc, binutils-final, gcc-final): Change `arguments'
  from a lambda to a list, and use (%current-system) as needed.
  (nix-system->gnu-triplet, boot-triplet): Have the first argument
  default to (%current-system).
* gnu/packages/bootstrap.scm (glibc-dynamic-linker): Have `system'
  default to (%current-system).
  (%bootstrap-gcc): Change `arguments' to a list.
* gnu/packages/gawk.scm (gawk): Likewise.
* gnu/packages/m4.scm (m4): Likewise.
* gnu/packages/make-bootstrap.scm (%glibc-for-bootstrap): Likewise, and
  expect `package-arguments' to return a list.
  (%static-inputs, %gcc-static, tarball-package): Likewise.
* gnu/packages/ncurses.scm (ncurses): Likewise.

distro: Rename (distro) to (gnu packages).

* distro.scm: Rename to...
* gnu/packages.scm: ... this.  Update all users accordingly.
* Makefile.am (MODULES): Adjust accordingly.
* po/POTFILES.in: Likewise.

distro: Change the module name space to (gnu ...).

* distro: Rename to...
* gnu: ... this.  Update module names accordingly.
* Makefile.am: Adjust accordingly.
* po/POTFILES.in: Likewise.
* distro.scm: Search for files under /gnu/packages instead of
  /distro/packages.
* gnu/packages/base.scm (ld-wrapper-boot3): Likewise.

Merge branch 'core-updates'

Conflicts:
	guix/build/union.scm

distro: binutils: Add a "lib" output.

* distro/packages/base.scm (binutils): Add `outputs' field.

Merge branch 'master' into core-updates

Conflicts:
	build-aux/download.scm
	distro/packages/autotools.scm
	distro/packages/base.scm
	distro/packages/bootstrap.scm
	distro/packages/lsh.scm
	distro/packages/make-bootstrap.scm
	distro/packages/ncurses.scm
	distro/packages/perl.scm
	tests/derivations.scm
	tests/union.scm

Update license headers.

Change all license headers, except guix/build/* and ld-wrapper.scm, with
this code:

  (use-modules (guix build utils)
	       (srfi srfi-1))

  (fluid-set! %default-port-encoding "UTF-8")

  (substitute* (remove (lambda (f)
			 (or (string-contains f ".tar.")
			     (string-contains f ".git/")
			     (string-contains f ".so")
			     (string-suffix? ".o" f)
			     (string-suffix? ".a" f)
			     (string-suffix? ".go" f)
			     (string-suffix? ".pdf" f)
			     (string-suffix? ".png" f)
			     (string-suffix? ".info" f)
			     (equal? (basename f) "guix-daemon")
			     (equal? (basename f) "nix-setuid-helper")
			     (string-contains f "nix-upstream/")
			     (string-contains f "distro/packages/bootstrap/")))
		       (find-files "." "\\.[a-z]+$"))
    (("^([[:graph:]]+) This file is part of Guix." _ comment-start)
     (string-append comment-start " This file is part of GNU Guix."))
    (("^([[:graph:]]+) Guix --- Nix package management.*" _ comment-start)
     (string-append comment-start
		    " GNU Guix --- Functional package management for GNU\n"))
    (("^([[:graph:]]+) Guix is " _ comment-start)
     (string-append comment-start " GNU Guix is "))
    (("^([[:graph:]]+) along with Guix." _ comment-start)
     (string-append comment-start " along with GNU Guix."))
    (("^([[:graph:]]+) Copyright \\(C\\)" _ comment-start)
     (string-append comment-start " Copyright ©")))

Change headers using C-style comments manually.

distro: libtool: Add a "bin" output.

* distro/packages/autotools.scm (libtool): Add a "bin" output.
* distro/packages/base.scm (guile-final): Remove comment about retained
  dependency.

distro: coreutils: Enable tests; add dependency on ACL and GMP.

* distro/packages/base.scm (coreutils): Set #:parallel-build? #f.  Add
  `patch-shell-references' phase.  Add 'acl', 'gmp', and 'perl' as
  inputs, as suggested by Nikita Karetnikov.

distro: sed: Patch references to /bin/sh in the test suite.

* distro/packages/base.scm (sed): Add `patch-test-suite' phase.

distro: glibc: Build the statically-linked Bash embedded in glibc.

* distro/packages/base.scm (glibc): Expect "static-bash" to be a
  directory, not a single file.  Call `remove-store-references' on the
  "bash" binary that is copied.  Add an `sh' -> `bash' symlink.  Change
  the "static-bash" input to (static-package bash-light).
  (glibc-final): Rename to...
  (glibc-final-with-bootstrap-bash): ... this.  Change `name' to
  "glibc-intermediate".  Remove #:patch-shebangs? setting.
  (cross-gcc-wrapper): New procedure, with code formerly in
  GCC-BOOT0-WRAPPED.
  (gcc-boot0-wrapped): Use it.
  (static-bash-for-glibc): New variable.
  (glibc-final): Inherit from GLIBC-FINAL-WITH-BOOTSTRAP-BASH, and use
  STATIC-BASH-FOR-GLIBC as the "static-bash" input.

distro: glibc: Fix contradicting settings of `BASH_SHELL'.

* distro/packages/base.scm (glibc-final): Remove `ac_cv_path_BASH_SHELL'
  setting.
  (glibc): Set `BASH_SHELL' instead of `ac_cv_path_BASH_SHELL'.

distro: libc: Update to 2.17.

* distro/packages/base.scm (glibc): Update to 2.17.

build-system/gnu: Patch shebangs in all the source; patch SHELL in makefiles.

* guix/build/utils.scm (call-with-ascii-input-file): New procedure.
  (patch-shebang): Use it.
  (patch-makefile-SHELL): New procedure.
* guix/build/gnu-build-system.scm (patch-source-shebangs): Patch all the
  files, not just executables; remove `po/Makefile.in.in' patching.
  (patch-generated-files): Rename to...
  (patch-generated-file-shebangs): ... this.  Patch executables and
  makefiles.
  (%standard-phases): Adjust accordingly.

* distro/packages/autotools.scm (libtool): Remove call to `patch-shebang'.
* distro/packages/base.scm (gcc-4.7): Likewise.
  (guile-final): Remove hack to skip `test-command-line-encoding2'.
* distro/packages/bash.scm (bash): Remove `pre-configure-phase'.
* distro/packages/readline.scm (readline): Likewise.
* distro/packages/ncurses.scm (ncurses): Remove `pre-install-phase'.

distro: coreutils: Update to 8.20.

* distro/packages/base.scm (coreutils): Update to 8.20.

distro: guile: Patch (ice-9 popen) to use the right shell.

* distro/packages/guile.scm (guile-2.0): Add `pre-configure'.
* distro/packages/base.scm (guile-final): Adjust to preserve the
  `pre-configure' phase.

distro: Update `guile-final' to not fail during `patch-source-shebangs' phase.

* distro/packages/base.scm (guile-final): Add workaround on top of
  GUILE-2.0/FIXED to avoid `patch-source-shebangs' failure on one of the
  source files.

distro: glibc: Add a statically-linked Bash to $out/bin.

* distro/packages/base.scm (glibc): Pass `ac_cv_path_BASH_SHELL' in the
  configure flags.  During the `pre-configure' phase, copy the
  "static-bash" input to $out/bin, and change `system' and `popen' to
  use it instead of /bin/sh.  Add the "static-bash" input.
  Suggested by Shea Levy <shea@shealevy.com> and
  Lluís Batlle i Rossell <viric@viric.name>.

distro: gcc: Patch to allow builds without /bin/sh.

* distro/packages/base.scm (gcc-4.7): In `pre-configure' phase, patch
  shebang in `gcc/exec-tool.in'.

distro: ld-wrapper: Use the current Bash instead of /bin/sh.

* distro/packages/ld-wrapper.scm: Use @BASH@ in shebang.  Change module
  name to (gnu build-support ld-wrapper).
* distro/packages/base.scm (ld-wrapper-boot3): Substitute @BASH@.
  (ld-wrapper): Use BASH-FINAL.