gnu: gpsbabel: Disable tests on i686.

* gnu/packages/gps.scm (gpsbabel)[arguments]: Add #:tests?.

gnu: texlive: Move script packages from native-inputs to inputs.

* gnu/packages/texlive.scm (texlive): Move perl, python and tcsh from
    native inputs to inputs.

gnu: texlive: Add inputs fontforge and ruby.

* gnu/packages/texlive.scm (texlive): Add interpreters fontforge and ruby
    to the inputs.

gnu: texlive: Use system potrace instead of bundled copy.

* gnu/packages/texlive.scm (texlive): Add potrace as an input and modify
    the configure flags accordingly.

gnu: potrace: Install libraries and header files.

* gnu/packages/fontutils.scm (potrace): Add configure flag to install
    libraries and header files.

gnu: texlive: Drop obsolete input t1lib.

* gnu/packages/texlive.scm (texlive): Drop input t1lib and the corresponding
    configure flag.
    Since texlive-2013, xdvi uses freetype instead of t1lib for rendering.

gnu: texlive: Use system libpaper instead of bundled copy.

* gnu/packages/texlive.scm (texlive): Add libpaper as an input and modify
    the configure flags accordingly.

gnu: texlive: Use system harfbuzz instead of bundled copy.

* gnu/packages/texlive.scm (texlive): Add harfbuzz as an input and modify
    the configure flags accordingly.

gnu: harfbuzz: Add and enable input graphite2.

* gnu/packages/gtk.scm (harfbuzz): Add input graphite2 and enable it with
    the corresponding configure flag.

gnu: texlive: Use system graphite2 instead of bundled copy.

* gnu/packages/texlive.scm (texlive): Add graphite2 as an input and modify
    the configure flags accordingly.

gnu: Add GPS Correlate.

* gnu/packages/gps.scm (gpscorrelate): New variable.

gnu: Add GPSBabel.

* gnu/packages/gps.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.

gnu: Add ath9k-htc-firmware.

* gnu/packages/firmware.scm: New file.
* gnu/packages/patches/ath9k-htc-firmware-objcopy.patch: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add 'firmware.scm'.
  (dist_patch_DATA): Add the patch.

gnu: Add Xtensa bare-bones cross-compiler.

* gnu/packages/cross-base.scm (xgcc-xtensa): New variable.
* gnu/packages/bootstrap.scm (glibc-dynamic-linker): Add case for
  "xtensa-elf".

gnu: guile-ncurses: Update to 1.6.

* gnu/packages/guile.scm (guile-ncurses): Update to 1.6.

gnu: mit-scheme: Fix typo in 'supported-systems'.

* gnu/packages/scheme.scm (mit-scheme)[supported-systems]: Correct
  spelling of "mips64el-linux".

gnu: atlas: Make it non-substitutable.

Suggested by Federico Beffa <beffa@ieee.org>.

* gnu/packages/maths.scm (atlas)[arguments]: Pass #:substitutable? #f.
  [description]: Adjust accordingly.

gnu: Mark a few packages as unsupported on MIPS.

* gnu/packages/gprolog.scm (gprolog): Add 'supported-systems' field.
* gnu/packages/qemu.scm (qemu-headless): Likewise.
* gnu/packages/qt.scm (qt): Likewise.
* gnu/packages/scheme.scm (racket): Likewise.

gnu: Add miscfiles

* gnu/packages/miscfiles.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.

gnu: Add prefix to license imports in (gnu packages feh).

* gnu/packages/feh.scm: Import (guix licenses) with #:prefix license: to avoid
  importing 'imlib2' from both (gnu packages image) and (guix licenses).