Merge branch 'master' into core-updates

download: Cope with Guile 2.0.6 or earlier.

* guix/build/download.scm: Do not attempt to support relative URIs in
  "Location" headers if 'declare-relative-uri-header!' is not present.
  This is the case for Guile 2.0.6 or earlier.

download: Handle HTTP redirects to relative URI references.

Fixes <http://bugs.gnu.org/19840>.
Reported by Ricardo Wurmus <rekado@elephly.net>.

* guix/build/download.scm: On Guile 2.0.11 or earlier, redefine the http
  "Location" header to accept relative URIs.
  (resolve-uri-reference): New exported procedure.
  (http-fetch): Use 'resolve-uri-reference' to resolve redirections.
* guix/http-client.scm (http-fetch): Use 'resolve-uri-reference'

build-system/perl: Use Build.PL for builds if present.

* guix/build/perl-build-system.scm (configure): Use Build.PL if present.
  (build, check, install): New procedures.
  (%standard-phases): Replace build, check, and install phases.
* guix/build-system/perl (perl-build): Add make-maker? and module-build-flags
  arguments.
* doc/guix.texi (Build Systems)[perl-build-system]: Document behavior rsp.
  Build.PL and new arguments.

utils: Preserve symbolic links in 'wrap-program'.

* guix/build/utils.scm (wrap-program): Preserve symbolic links instead of
    copying the contents of the link.

Co-authored-by: Ludovic Courtès <ludo@gnu.org>

Closes <http://debbugs.gnu.org/cgi/bugreport.cgi?bug=19743>.

utils: Use $0 instead of absolute path to original program in 'wrap-program'.

* guix/build/utils.scm (wrap-program): Create scripts that use $0 (which is
    usually just the base name) instead of the absolute path to the original
    program. Alternative implementation of 2ed11b3.

Co-authored-by: Ludovic Courtès <ludo@gnu.org>

Closes <http://debbugs.gnu.org/cgi/bugreport.cgi?bug=19742>.

utils: Strip duplicates from search path.

* guix/build/utils.scm (search-path-as-list): Delete duplicate input
  directories before searching.

build: Add 'waf-build-system'.

* guix/build-system/waf.scm,
  guix/build/waf-build-system.scm: New files.
* Makefile.am (MODULES): Add them.
* doc/guix.texi (Build Systems): Document waf-build-system.

Add support for 'cvs-fetch' method in origins.

* guix/cvs-download.scm, guix/build/cvs.scm: New files.
* Makefile.am (MODULES): Add them.

build-system/glib-or-gtk: Add MIME directories to $XDG_DATA_DIRS.

Fixes an Evince regression introduced in commit 3d243e9.

* guix/build/glib-or-gtk-build-system.scm (data-directories): Check the
  /mime sub-directory.

Merge branch 'core-updates'

Conflicts:
	gnu/packages/bootstrap.scm

Merge branch 'master' into core-updates

build/glib-or-gtk-build-system: Fix 'generate-icon-cache'.

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

* guix/build/glib-or-gtk-build-system.scm (generate-icon-cache): Add check for
  existence of icons directory.

guix: build/glib-or-gtk-build-system: Add support for GIO and XDG theming.

* guix/build/glib-or-gtk-build-system.scm (data-directories): Rename
  'schemas-directories' to 'data-directories' and add support for XDG theming
  data.

* guix/build/glib-or-gtk-build-system.scm (gio-module-directories): New
  function.

* guix/build/glib-or-gtk-build-system.scm (wrap-all-programs): Update names to
  reflect that we are dealing with more types of data and not only with
  schemas.  Add handling of GIO modules.

* guix/build-system/glib-or-gtk.scm (lower): Import the 'bin' output of GLib
  instead of 'out'.  This was an error since we need the program
  'glib-compile-schemas'.  Update the description.

build-system/gnu: Patch /usr/bin/file in all 'configure' files.

* guix/build/utils.scm (patch-/usr/bin/file): New procedure.
* guix/build/gnu-build-system.scm (patch-usr-bin-file): Rewrite using
  it.  Patch all the files returned by 'find-files' that are executable.
* gnu/packages/gawk.scm (gawk)[arguments]: Remove use of 'substitute*'
  for 'extension/configure'.

Merge branch 'master' into core-updates

linux-boot: Make /etc/mtab a symlink to /proc/self/mounts.

Fixes <http://bugs.gnu.org/19491>.

* gnu/build/linux-boot.scm (mount-root-file-system): Make /root/etc/mtab
  a symlink to /proc/self/mounts.
* gnu/build/file-systems.scm (mount-file-system): Don't update /etc/mtab.
* guix/build/syscalls.scm (mount, umount): Have #:update-mtab? default to
  #f.

build-system/gnu: Use executables from the target inputs in 'patch-shebangs'.

Fixes <http://bugs.gnu.org/18895>.

* guix/build/gnu-build-system.scm (patch-shebangs): Add #:inputs
  parameter.  Remove 'bindirs'.  Add 'bin-directories',
  'output-bindirs', and 'input-bindirs'.  Use them instead of (getenv
  "PATH") to as the argument to 'patch-shebang'.

Merge branch 'master' into core-updates

gnu: Revert use of '--strip-all'.

This reverts commits f05bdc9412135f34a1c417edc203c35cd005d0d5
and 856ae5e6c71a1283a414d33e638051f95d3cce35.

This broke all sorts of things.  See <http://hydra.gnu.org/eval/102058>,
for example.