download: Comment on lack of progress report with chunked encoding.

* guix/build/download.scm (progress-proc): Add comment.

download: Measure and display the throughput.

* guix/build/download.scm (duration->seconds, throughput->string): New
  procedures.
  (progress-proc): Measure and display the throughput.

download: Abstract the receive buffer size.

* guix/build/download.scm (%http-receive-buffer-size): New variable.
  (progress-proc, tls-wrap, http-fetch): Use it.

utils: Call the progress-report proc when 'dump-port' starts.

* guix/build/utils.scm (dump-port): Add call to PROGRESS at the
  beginning.

build-system/gnu: Set $LC_ALL (or similar) to the chosen locale.

Suggested by Mark H Weaver.

* guix/build/utils.scm (locale-category->string): New procedure.
* guix/build/gnu-build-system.scm (install-locale): Add 'setenv' call.

gnu: Remove now unneeded 'localedef' invocations.

This is a followup to commit b0fd2bd.

* gnu/packages/gawk.scm (gawk)[arguments] <install-locales>: Add comment
  on why we leave this here.
* gnu/packages/guile.scm (guile-ncurses)[arguments]: Remove
  'install-locales' phase.
* gnu/packages/swig.scm (swig)[arguments]: Likewise.
* gnu/packages/python.scm (python-matplotlib): Remove 'LOCPATH' setting
  and 'localedef' invocation.
  (python-scipy): Likewise.

gnu: Remove now unneeded 'unpack' phases for unzip.

This is a followup to commit cd0385b.

* gnu/packages/bioinformatics.scm (hisat)[arguments]: Remove 'unpack'
  phase.
* gnu/packages/image.scm (freeimage): Likewise.
* gnu/packages/python.scm (python2-cssutils): Likewise.

gnu: gettext: Set encoding to ISO-8859-1 when modifying files.

* gnu/packages/gettext.scm (gnu-gettext)[arguments] <patch-tests>: Set
  %default-port-encoding.  Fixes test failures at
  <http://hydra.gnu.org/build/262586>.

build-system/cmake: Enable verbose output from Makefile builds.

* guix/build/cmake-build-system.scm (configure): Pass
  -DCMAKE_VERBOSE_MAKEFILE=ON to cmake.

gnu: cmake: Update to 3.1.3.

* gnu/packages/cmake.scm (cmake): Update to 3.1.3.

gnu: cairo: Enable tee surface backend.

* gnu/packages/gtk.scm (cairo)[arguments]: Add --enable-tee to
  configure-flags.

gnu: sqlite: Update to 3.8.8.3.

* gnu/packages/databases.scm (sqlite): Update to 3.8.8.3.

gnu: sqlite: Add "CFLAGS=-O2 -DSQLITE_SECURE_DELETE" to configure-flags.

* gnu/packages/databases.scm (sqlite)[arguments]: Add "CFLAGS=-O2
  -DSQLITE_SECURE_DELETE" to configure-flags.

ld-wrapper: Add '-rpath' for arguments such as 'libfoo.so.5.3'.

Suggested by Andreas Enge <andreas@enge.fr>
at <http://lists.gnu.org/archive/html/guix-devel/2015-02/msg00810.html>.
CMake command lines appear to refer to such file names.

* gnu/packages/ld-wrapper.scm (shared-library?): New procedure.
  (library-files-linked): Use it.

packages: When possible, use a UTF-8 locale in patch-and-repack.

* guix/packages.scm (%standard-patch-inputs): Add "locales".
  (patch-and-repack)[builder]: Add 'locales' variable.  When it is true,
  call 'setenv' and 'setlocale'.

gnu: Add glibc-utf8-locales to the implicit inputs.

Suggested by Mark H Weaver and Andreas Enge
at <http://lists.gnu.org/archive/html/guix-devel/2015-02/msg00356.html>.

* gnu/packages/commencement.scm (gzip-final, glibc-utf8-locales-final):
  New variables.
  (%final-inputs): Use them.

build-system/gnu: Add 'install-locale' phase.

* guix/build/gnu-build-system.scm (install-locale): New procedure.
  (%standard-phases): Add it.
* guix/build-system/gnu.scm (gnu-build): Add #:locale and pass it to
  the build script.
  (gnu-cross-build): Likewise.

build-system: Use 'modify-phases'.

* guix/build/cmake-build-system.scm (%standard-phases): Use
  'modify-phases' instead of alist-*.
* guix/build/glib-or-gtk-build-system.scm (%standard-phases): Likewise.
* guix/build/gnu-dist.scm (%dist-phases): Likewise.
* guix/build/perl-build-system.scm (%standard-phases): Likewise.
* guix/build/python-build-system.scm (%standard-phases): Likewise.
* guix/build/ruby-build-system.scm (%standard-phases): Likewise.
* guix/build/waf-build-system.scm (%standard-phases): Likewise.

utils: Add 'modify-phases'.

* guix/build/utils.scm (modify-phases): New macro.

build-system/gnu: Add support for zip archives.

Fixes <http://bugs.gnu.org/19866>.
Reported by Andreas Enge <andreas@enge.fr>.

* guix/build/gnu-build-system.scm (unpack): Use 'unzip' when SOURCE ends
  in '.zip'.