build-system/trivial: Don't bind `%target' in the builder.

* guix/build-system/trivial.scm (trivial-cross-build): Don't bind
  `%target' here since this causes problem when BUILDER
  contains (use-modules ...) clauses, and can be achieved differently
  anyway.

gnu: gawk: Allow cross-compilation.

* gnu/packages/gawk.scm (gawk)[arguments]: Annihilate the
  `check-for-shared-lib-support' target when cross-compiling.

build-system/gnu: Disable test suite when cross building.

* guix/build-system/gnu.scm (gnu-cross-build): Change #:tests? to
  default to #f.

gnu: libffi: Upgrade to 3.0.13.

* gnu/packages/libffi.scm (libffi): Upgrade to 3.0.13.

utils: `set-path-environment-variable' calls `unsetenv' for empty values.

* guix/build/utils.scm (set-path-environment-variable): When VALUE is
  the empty string, call `unsetenv' instead of `setenv'.
* gnu/packages/guile.scm (guile-2.0)[arguments]: Remove `unsetenv'
  trick.

gnu: acl, attr: Make `gettext' a native input.

* gnu/packages/acl.scm (acl): Make `gettext' a native input, always.
* gnu/packages/attr.scm (attr): Likewise.

gnu: gmp: Upgrade to 5.1.2.

* gnu/packages/multiprecision.scm (gmp): Update to 5.1.2.

gnu: gawk: Upgrade to 4.1.0.

* gnu/packages/gawk.scm (gawk): Update to 4.1.0.  Remove wrong-headed
  comments.

gnu: gzip: Upgrade to 1.6.

* gnu/packages/compression.scm (gzip): Upgrade.

build-system/gnu: Set #:tests? to #f when cross-compiling.

* guix/build/gnu-build-system.scm (check): Add `target' formal
  parameter.  Change `tests?' to default to (not target).

build-system/gnu: Save `environment-variables' after each phase.

* guix/build/gnu-build-system.scm (set-paths): Move `system' call to...
  (gnu-build): ... here.

build-system/gnu: Unify with (guix build-system gnu-cross-build).

* guix/build/gnu-build-system.scm (set-paths): Add `native-inputs' and
  `native-search-paths' keyword parameters.  Honor them.
  (configure): Add `target' and `native-inputs' keyword parameters.
  Look for Bash in NATIVE-INPUTS or INPUTS.  Pass `--host' when TARGET
  is true.
  (strip): Add `strip-command' keyword parameter.  Use it.
* guix/build/gnu-cross-build.scm: Remove.
* Makefile.am (MODULES): Adjust accordingly.
* gnu/packages/acl.scm, gnu/packages/attr.scm, gnu/packages/base.scm,
  gnu/packages/bash.scm, gnu/packages/gawk.scm,
  gnu/packages/gettext.scm, gnu/packages/guile.scm,
  gnu/packages/libffi.scm, gnu/packages/libsigsegv.scm,
  gnu/packages/linux.scm, gnu/packages/ncurses.scm,
  gnu/packages/readline.scm, guix/build-system/gnu.scm: Replace
  `%standard-cross-phases' by `%standard-phases'.  Remove references
  to (guix build gnu-cross-build).

Merge branch 'master' into core-updates

Conflicts:
	gnu/packages/make-bootstrap.scm

gnu: libgc: Always build with -DUSE_LIBC_PRIVATES.

* gnu/packages/bdw-gc.scm (libgc): Add `arguments' field.
* gnu/packages/make-bootstrap.scm (%guile-static): Remove local `libgc'.

gnu: libgc: Switch to 7.2d.

* gnu/packages/bdw-gc.scm (libgc): Upgrade to 7.2d.
  (libgc-7.2): Remove.

build: Move Hydra recipe to build-aux/hydra.

* hydra.scm: Rename to...
* build-aux/hydra/gnu-system.scm: ... this.
* Makefile.am (EXTRA_DIST): Adjust accordingly.

package: Fix i18n of the number of packages message.

* guix/scripts/package.scm (guix-package)[process-actions]: Use `N_' for
  i18n of the number of packages message.

substitute-binary: Report progress while downloading.

* guix/scripts/substitute-binary.scm (decompressed-port): Improve docstring.
  (progress-report-port): New procedure.
  (guix-substitute-binary)["--substitute"]: Use it to report progress.
* guix/build/download.scm: Export `progress-proc' and `uri-abbreviation'.

Update eo.po.

build: Split Makefile.am into two parts.

* Makefile.am (MODULES): Move gnu/* to gnu-system.am.
  (patchdir, dist_patch_DATA, bootstrapdir,
  bootstrap_x86_64_linuxdir, bootstrap_i686_linuxdir,
  dist_bootstrap_x86_64_linux_DATA, dist_bootstrap_i686_linux_DATA,
  nodist_bootstrap_x86_64_linux_DATA, nodist_bootstrap_i686_linux_DATA,
  install-data-hook, DISTCLEANFILES, DOWNLOAD_FILE,
  gnu/packages/bootstrap/x86_64-linux/guile-2.0.7.tar.xz,
  gnu/packages/bootstrap/i686-linux/guile-2.0.7.tar.xz): Move to...
* gnu-system.am: ... here.  New file.