gnu: gcc: Always link against libgcc_s.so.

* gnu/packages/gcc.scm (gcc-4.7)[pre-configure]: Add snippet to #undef
  USE_LD_AS_NEEDED.

gnu: tar: Upgrade to 1.27.1.

* gnu/packages/base.scm (tar): Upgrade to 1.27.1.

gnu: glibc: Really disable 'ldconfig' and /etc/ld.so.cache.

* gnu/packages/base.scm (glibc): Add 'snippet' to set use_ldconfig=no.
  Remove "glibc-no-ld-so-cache.patch"; that patch would still build
  'ldconfig', and ld.so would still contain ld.so.cache-related code,
  and would look for info in /etc/etc/ld.so.cache (sic).
* gnu/packages/patches/glibc-no-ld-so-cache.patch: Remove.
* gnu-system.am (dist_patch_DATA): Adjust accordingly.

tests: Adjust to bootstrap tarball updates.

Reported by Mark H. Weaver <mhw@netris.org>.

* tests/packages.scm ("package-source-derivation, snippet"): Change to
  "guile-2.0.9.tar.xz".
* tests/union.scm ("union-build"): Check or include/c++ being a symlink.

gnu: Switch to GCC 4.8 as the default compiler.

* build-aux/download.scm (file-name->uri): Update URL to /20131110.
* gnu-system.am (nodist_bootstrap_x86_64_linux_DATA,
  nodist_bootstrap_i686_linux_DATA): Change base name to
  'guile-2.0.9.tar.xz'.
  (gnu/packages/bootstrap/x86_64-linux/guile-2.0.9.tar.xz,
  gnu/packages/bootstrap/i686-linux/guile-2.0.9.tar.xz): New targets.
  (gnu/packages/bootstrap/x86_64-linux/guile-2.0.7.tar.xz,
  gnu/packages/bootstrap/i686-linux/guile-2.0.7.tar.xz): Remove.
  (gnu/packages/bootstrap/mips64el-linux/guile-2.0.9.tar.xz): Update
  hash.
* gnu/packages/base.scm (gcc-boot0): Base upon GCC-4.8.  Enable C++, and
  add a few --disable flags.  Remove MPFR workaround.
  (cross-gcc-wrapper): Base upon GCC-4.8.  Wrap both 'gcc' and 'g++'.
  (libstdc++): New variable.
  (gcc-final): Add it as an input; pass corresponding -I and -L flags.
* gnu/packages/bootstrap.scm (%bootstrap-guile): Always use
  "guile-2.0.9.tar.xz.
  (%bootstrap-coreutils&co): Update hashes.
  (%bootstrap-binutils): Update URL and hashes.
  (%bootstrap-glibc): Likewise.
  (%bootstrap-gcc): Likewise.
* gnu/packages/gcc.scm (gcc-4.7): Add LDFLAGS.
  Add --disable-libstdcxx-pch.
  Modify the GNU_USER*_SPEC macros from gnu-user*.h instead of the raw
  _SPEC macros.

Merge branch 'master' into core-updates

Conflicts:
	guix/packages.scm

gnu: lapack: Use origin snippet to remove the non-free files.

* gnu/packages/maths.scm (lapack): Add 'snippet' field with contents of
  former 'remove-non-free-files' phase; remove that phase.

packages: Add a 'snippet' field to <origin>.

* guix/packages.scm (<origin>): Add 'snippet', 'modules', and
  'imported-modules' fields.
  (patch-and-repack): Make 'inputs' a keyword parameter.  Add 'snippet',
  'modules', and 'imported-modules' parameters.  Accept SOURCE as a raw
  file name.  Insert SNIPPET in BUILDER.  Pass IMPORTED-MODULES to
  'build-expression->derivation'.
  (package-source-derivation): Pass the extra arguments to
  'patch-and-repack'.
* tests/packages.scm ("package-source-derivation, snippet"): New test.
* doc/guix.texi (Defining Packages): Mention the 'patches' and 'snippet'
  fields.
  (Invoking guix build): Tell that --source has patches and snippets
  applied.
  (Software Freedom): Mention packages that contain non-free code.

doc: Document current security issue with substitutes.

Suggested by Mark H. Weaver <mhw@netris.org>.

* doc/guix.texi (Features): Add note about unauthenticated binaries.

doc: Improve documentation of '--no-substitutes'.

Suggested by Mark H. Weaver <mhw@netris.org>.

* doc/guix.texi (Invoking guix package): Spell out the --no-substitutes
  documentation.
  (Invoking guix build): Use the more complete --no-substitutes
  documentation.
  (Invoking guix-daemon): Explain the interaction with what clients ask
  for.

gnu: Add LAPACK.

* gnu/packages/maths.scm (lapack): New variable.

Add indentation rule for 'origin'.

tests: Fix max-silent-time test.

* tests/derivations.scm ("build-expression->derivation and
  max-silent-time"): Use STORE instead of %STORE.  Change BUILDER to
  succeed by default.  Return #f when no exception is raised.

tests: Add the builder as an input to raw derivations.

* tests/derivations.scm ("build derivation with 1 source",
  "derivation with local file as input",
  "derivation with a fixed-output input",
  "multiple-output derivation",
  "multiple-output derivation, non-alphabetic order",
  "user of multiple-output derivation"): Add %BASH as an input, needed
  in chroot builds.

gnu: mit-krb5: don't assume arguments are evaluated right-to-left.

* gnu/packages/patches/mit-krb5-init-fix.patch: New file.
* gnu/packages/mit-krb5.scm (mit-krb5): Apply patch at the end of the custom
  unpack phase.
* gnu-system.am (dist_patch_DATA): Add patch.

Add mips64el-linux to the list of supported systems.

* m4/guix.m4 (GUIX_ASSERT_SUPPORTED_SYSTEM): Add mips64el-linux to the list of
  supported systems.

gnu: add bootstrap support for mips64el-linux using the MIPS N32 ABI.

* .gitignore: Add entry for bootstrap/mips64el-linux/guile-2.0.9.tar.xz.

* gnu-system.am (bootstrap_mips64el_linuxdir,
  dist_bootstrap_mips64el_linux_DATA, nodist_bootstrap_mips64el_linux_DATA):
  New variables.
  (DISTCLEANFILES): Add $(nodist_bootstrap_mips64el_linux_DATA).
  (gnu/packages/bootstrap/mips64el-linux/guile-2.0.9.tar.xz): New target.

* build-aux/download.scm (file-name->uri): Adapt to the newer mips64el-linux
  bootstrap tarballs.

* gnu/packages/bootstrap.scm (%bootstrap-guile, %bootstrap-coreutils&co,
  %bootstrap-binutils, %bootstrap-glibc, %bootstrap-gcc): Adapt to the newer
  mips64el-linux bootstrap tarballs.

* gnu/packages/bootstrap/mips64el-linux/bash:
* gnu/packages/bootstrap/mips64el-linux/mkdir:
* gnu/packages/bootstrap/mips64el-linux/tar:
* gnu/packages/bootstrap/mips64el-linux/xz: New files.

gnu: liboop: fix deplibs check method for mips64.

* gnu/packages/patches/liboop-mips64-deplibs-fix.patch: New file.
* gnu/packages/lsh.scm (liboop): Add patch.
* gnu-system.am (dist_patch_DATA): Add patch.

gnu: gd: fix deplibs check method for mips64.

* gnu/packages/patches/gd-mips64-deplibs-fix.patch: New file.
* gnu/packages/gd.scm (gd): Add patch.
* gnu-system.am (dist_patch_DATA): Add patch.

gnu: libmad: Fix MIPS assembler code to work with new GCC.

* gnu/packages/patches/libmad-mips-newgcc.patch: New file.
* gnu/packages/mp3.scm (libmad): Add patch.
* gnu-system.am (dist_patch_DATA): Add patch.