Merge branch 'master' into core-updates

Conflicts:
	Makefile.am
	gnu/packages/autotools.scm
	gnu/packages/guile.scm
	gnu/packages/python.scm
	gnu/packages/shishi.scm
	guix/gnu-maintenance.scm
	guix/scripts/build.scm
	guix/scripts/gc.scm
	guix/scripts/package.scm
	guix/scripts/substitute-binary.scm
	guix/ui.scm
	nix/nix-daemon/guix-daemon.cc
	test-env.in
	tests/nar.scm
	tests/store.scm

gnu: gdbm, nano: Synchronize synopses.

* gnu/packages/gdbm.scm, gnu/packages/nano.scm: Synchronize synopses
  with the Womb.

gnu: Python: fix the compilation of some modules from the standard library.

This commit enables the bz2, dbm, readline, ssl and zlib modules.

* gnu/packages/gdbm.scm: Enable the compatibility mode.
* gnu/packages/python.scm: Enable a few modules from the standard library.
* gnu/packages/patches/python-fix-dbm.patch: New file.
* Makefile.am: Add it.

gnu: Python: fix the compilation of some modules from the standard library.

This commit enables the bz2, dbm, readline, ssl and zlib modules.

* gnu/packages/gdbm.scm: Enable the compatibility mode.
* gnu/packages/python.scm: Enable a few modules from the standard library.
* gnu/packages/patches/python-fix-dbm.patch: New file.
* Makefile.am: Add it.

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 '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.

Merge branch 'master' into core-updates

Conflicts:
	distro/packages/multiprecision.scm

distro: Use (guix licenses) instead of strings.

* distro/packages/acl.scm, distro/packages/attr.scm,
  distro/packages/autotools.scm, distro/packages/base.scm,
  distro/packages/bash.scm, distro/packages/bdw-gc.scm,
  distro/packages/bison.scm, distro/packages/bootstrap.scm,
  distro/packages/compression.scm, distro/packages/cpio.scm,
  distro/packages/ddrescue.scm, distro/packages/ed.scm,
  distro/packages/flex.scm, distro/packages/gawk.scm,
  distro/packages/gdbm.scm, distro/packages/gettext.scm,
  distro/packages/gnupg.scm, distro/packages/gnutls.scm,
  distro/packages/gperf.scm, distro/packages/guile.scm,
  distro/packages/help2man.scm, distro/packages/less.scm,
  distro/packages/libffi.scm, distro/packages/libsigsegv.scm,
  distro/packages/libunistring.scm, distro/packages/linux.scm,
  distro/packages/lout.scm, distro/packages/lsh.scm,
  distro/packages/m4.scm, distro/packages/multiprecision.scm,
  distro/packages/nano.scm, distro/packages/ncurses.scm,
  distro/packages/nettle.scm, distro/packages/perl.scm,
  distro/packages/pkg-config.scm, distro/packages/pth.scm,
  distro/packages/readline.scm, distro/packages/recutils.scm,
  distro/packages/shishi.scm, distro/packages/system.scm,
  distro/packages/texinfo.scm, distro/packages/time.scm,
  distro/packages/wget.scm, distro/packages/which.scm,
  distro/packages/zile.scm: Use (guix licenses).

distro: Add GDBM.

* distro/packages/gdbm.scm: New file.
* Makefile.am (MODULES): Add it.