Merge branch 'core-updates'

Conflicts:
	gnu/packages/bootstrap.scm

gnu: Add toolchain support for 'armhf-linux'.

Based on preliminary work by John Darrington <john@darrington.wattle.id.au>.

* gnu/packages/cross-base.scm (xgcc-armhf): New variable.
* gnu/packages/gcc.scm (gcc-configure-flags-for-triplet): Add armhf case.
  (gcc-4.7)[pre-configure]: Add gcc/config/*/linux-eabi.h to the list
  of files in which to patch GLIBC_DYNAMIC_LINKER.
* gnu/packages/bootstrap.scm (glibc-dynamic-linker): Add armhf case.
* guix/utils.scm (gnu-triplet->nix-system, nix-system->gnu-triplet):
  Add armhf cases.

gnu: gcc: Use 'gcc-configure-flags-for-triplet' for native compilers too.

* gnu/packages/gcc.scm (gcc-configure-flags-for-triplet): Do not export it.
  (gcc-4.7): Pass the result of 'gcc-configure-flags-for-triplet' to configure
  for all builds, including native ones.
* gnu/packages/cross-base.scm (cross-gcc-arguments): Do not add the result of
  'gcc-configure-flags-for-triplet' here, since it is now included in the
  configure-flags inherited from gcc-4.8.

gnu: gcc-static: Remove -lgcc_s from GNU_USER_TARGET_LIB_SPEC.

* gnu/packages/make-bootstrap.scm (%gcc-static): Add 'remove-lgcc_s
  phase.
* gnu/packages/gcc.scm (gcc-4.7): Add comment.

Revert "gnu: gcc: Add '-lgcc_s' only when '-pthread' is given."

This reverts commit 9097e666d48c9b6c0263dcbe60b5af69ff7689f4.

This turned out not to be a good strategy.  Some build system, e.g. tcl's, do
not pass -pthread on GNU/Linux by default, but merely link with -lpthread.
Also, Ludovic found other cases where libgcc_s is dlopened by libc that have
nothing to do with pthreads, e.g. to walk the stack.

gnu: gcc: Add '-lgcc_s' only when '-pthread' is given.

Suggested by Ludovic Courtès <ludo@gnu.org>.

* gnu/packages/gcc.scm (gcc-4.7): In our modified GNU_USER_TARGET_LIB_SPEC,
  add '-lgcc_s' only when '-pthread' is given.

gnu: gcc: Improve dynamic linker patching code.

* gnu/packages/gcc.scm (gcc-4.7): Join multi-line definitions of
  GLIBC_DYNAMIC_LINKER* before attempting substitutions.
  (gcc-4.9)[arguments]: Remove arguments override.

Merge branch 'master' into core-updates

gnu: gcc-4.9: Fix build on MIPS.

* gnu/packages/gcc.scm (gcc-4.9): Add 'join-two-line-dynamic-linker-defns
  phase.

packages: Add 'file-type' field to 'search-path-specification'.

Fixes <http://bugs.gnu.org/18033>.

* guix/packages.scm (<search-path-specification>): Rename 'directories'
  field to 'files'.  Add 'file-type'.
  (search-path-specification->sexp): Honor 'file-type'.
* gnu/packages/autotools.scm, gnu/packages/bootstrap.scm,
  gnu/packages/cross-base.scm, gnu/packages/games.scm,
  gnu/packages/gcc.scm, gnu/packages/glib.scm,
  gnu/packages/guile.scm, gnu/packages/man.scm,
  gnu/packages/perl.scm, gnu/packages/pkg-config.scm,
  gnu/packages/python.scm, gnu/packages/ruby.scm,
  gnu/packages/xfce.scm: Change 'directories' to 'files'.
* tests/packages.scm ("search paths"): Change 'directories' field to
  'files'.
* guix/scripts/environment.scm (for-each-search-path): Likewise.

gnu: gcc-4.8: Update to 4.8.4.

* gnu/packages/gcc.scm (gcc-4.8): Update to 4.8.4.  Remove patch.
* gnu/packages/patches/gcc-fix-pr61801.patch: Remove.
* gnu-system.am (dist_patch_DATA): Adjust accordingly.

gnu: gcc-4.9: Update to 4.9.2.

* gnu/packages/gcc.scm (gcc-4.9): Update to 4.9.2.

gnu: Some cleanup based on lint checkers.

* gnu/packages/admin.scm, gnu/packages/aidc.scm, gnu/packages/algebra.scm,
  gnu/packages/apr.scm, gnu/packages/avahi.scm, gnu/packages/backup.scm,
  gnu/packages/base.scm, gnu/packages/calcurse.scm, gnu/packages/cdrom.scm,
  gnu/packages/check.scm, gnu/packages/compression.scm, gnu/packages/cook.scm,
  gnu/packages/crypto.scm, gnu/packages/cryptsetup.scm, gnu/packages/curl.scm,
  gnu/packages/cyrus-sasl.scm, gnu/packages/databases.scm,
  gnu/packages/doxygen.scm, gnu/packages/dwm.scm, gnu/packages/elf.scm,
  gnu/packages/emacs.scm, gnu/packages/feh.scm, gnu/packages/file.scm,
  gnu/packages/fish.scm, gnu/packages/flex.scm, gnu/packages/fltk.scm,
  gnu/packages/fontutils.scm, gnu/packages/games.scm, gnu/packages/gcal.scm,
  gnu/packages/gcc.scm, gnu/packages/geeqie.scm, gnu/packages/ghostscript.scm,
  gnu/packages/gimp.scm, gnu/packages/gl.scm, gnu/packages/glib.scm,
  gnu/packages/gnome.scm, gnu/packages/gnunet.scm, gnu/packages/gnupg.scm,
  gnu/packages/gperf.scm, gnu/packages/grub.scm, gnu/packages/gsasl.scm,
  gnu/packages/gtk.scm, gnu/packages/guile-wm.scm, gnu/packages/guile.scm,
  gnu/packages/hurd.scm, gnu/packages/icu4c.scm, gnu/packages/image.scm,
  gnu/packages/imagemagick.scm, gnu/packages/irssi.scm, gnu/packages/kde.scm,
  gnu/packages/libdaemon.scm, gnu/packages/libevent.scm,
  gnu/packages/libidn.scm, gnu/packages/libusb.scm, gnu/packages/linux.scm,
  gnu/packages/lout.scm, gnu/packages/lsh.scm, gnu/packages/lsof.scm,
  gnu/packages/lua.scm, gnu/packages/maths.scm, gnu/packages/mcrypt.scm,
  gnu/packages/mp3.scm, gnu/packages/netpbm.scm, gnu/packages/noweb.scm,
  gnu/packages/ocaml.scm, gnu/packages/openssl.scm, gnu/packages/pcre.scm,
  gnu/packages/pdf.scm, gnu/packages/pkg-config.scm,
  gnu/packages/pretty-print.scm, gnu/packages/python.scm, gnu/packages/qt.scm,
  gnu/packages/rsync.scm, gnu/packages/scheme.scm, gnu/packages/scrot.scm,
  gnu/packages/sdl.scm, gnu/packages/skribilo.scm, gnu/packages/ssh.scm,
  gnu/packages/stalonetray.scm, gnu/packages/tcl.scm, gnu/packages/tcsh.scm,
  gnu/packages/telephony.scm, gnu/packages/texlive.scm, gnu/packages/tor.scm,
  gnu/packages/valgrind.scm, gnu/packages/version-control.scm,
  gnu/packages/vim.scm, gnu/packages/vpn.scm, gnu/packages/w3m.scm,
  gnu/packages/web.scm, gnu/packages/wordnet.scm, gnu/packages/xiph.scm,
  gnu/packages/xml.scm, gnu/packages/xorg.scm, gnu/packages/zile.scm,
  gnu/packages/zip.scm, gnu/packages/zsh.scm [synopsis, description]: Adjust
  according to lint checkers.
* gnu/packages/fltk.scm (fltk)[source]: Wrap long line in uri.
* /gnu/packages/xiph.scm (libogg, libtheora, vorbis-tools)[source]: Same.

Merge branch 'core-updates'

gnu: gcc-4.8.3: Add patch for PR61801.

* gnu/packages/patches/gcc-fix-pr61801.patch: New file.
* gnu/packages/gcc.scm (gcc-4.8): Use it.
* gnu-system.am (dist_patch_DATA): Add it.

Merge branch 'master' into core-updates

Conflicts:
	gnu-system.am

gnu: Adjust synopses as recommended by 'guix lint'.

Remove leading articles and trailing periods in package synopses.

Merge branch 'master' into core-updates

gnu: gccgo: Suppress the separate "lib" output.

Fixes <http://debbugs.gnu.org/18101>.

* gnu/packages/gcc.scm (custom-gcc): Add 'separate-lib-output?'
  keyword argument.
  (gccgo-4.8): Pass #:separate-lib-output? #f to 'custom-gcc'.

Merge branch 'master' into core-updates