gnu: Add audacity.
* gnu/packages/audacity.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Add it.
* gnu/packages/patches/audacity-fix-ffmpeg-binding.patch: New file.
* gnu-system.am (dist_patch_DATA): Add it.
gnu: portaudio: Patch for Audacity compatibility.
* gnu/packages/audio.scm (portaudio): Add a patch for Audacity compatibility.
* gnu/packages/patches/portaudio-audacity-compat.patch: New file.
* gnu-system.am (dist_patch_DATA): Add it.
gnu: tzdata: Update to 2015b.
* gnu/packages/base.scm (tzdata): Update to 2015b.
gnu: liba52: Pass --build to configure.
* gnu/packages/video.scm (liba52)[arguments]: Pass --build to configure.
gnu: xbindkeys: Pass --build to configure.
* gnu/packages/xdisorg.scm (xbindkeys)[arguments]: Pass --build to
configure.
gexp: Slightly simplify 'lower-inputs'.
* guix/gexp.scm (lower-inputs): Simplify first case by removing the
'input' binding.
gexp: Add 'local-file'.
* guix/gexp.scm (<local-file>): New record type.
(local-file): New procedure.
(local-file-compiler): New compiler.
(gexp->sexp) <struct? thing>: Handle the case where 'lower' returns a
file name.
(text-file*): Update docstring.local-file doc
* tests/gexp.scm ("one local file", "gexp->derivation, local-file"): New
tests.
* doc/guix.texi (G-Expressions): Mention local files early. Document
'local-file'. Update 'text-file*' documentation.
doc: Update gexp wrt. extensibility.
This is a followup to bcb1328.
* doc/guix.texi (G-Expressions): Move paragraph about extensibility
below. Remove assumptions that things are either packages or
derivations.
gnu: Add tocc.
* gnu/packages/search.scm (libtocc, tocc): New variables.
gnu: Add UnQLite.
* gnu/packages/databases.scm (unqlite): New variable.
gnu: Add Catch.
* gnu/packages/check.scm (catch-framework): New variable.
gnu: linux-libre: Update to 3.18.10
* gnu/packages/linux.scm (linux-libre): Update to version 3.18.10.
gnu: Add mpv.
* gnu/packages/video.scm (mpv): New variable.
gnu: Add vapoursynth.
* gnu/packages/video.scm (vapoursynth): New variable.
gnu: Add tesseract-ocr.
* gnu/packages/ocr.scm (tesseract-ocr): New variable.
gnu: Rename (gnu packages ocrad) to (gnu packages ocr).
* gnu/packages/ocrad.scm: Deleted.
* gnu/packages/ocr.scm: New file.
* gnu-system.am (GNU_SYSTEM_MODULES): Change ocrad.scm to ocr.scm.
gnu: Add leptonica.
* gnu/packages/image.scm (leptonica): New variable.
gnu: Add libwebp.
* gnu/packages/image.scm (libwebp): New variable.
gnu: freeglut: Add mesa to propagated inputs.
* gnu/packages/gl.scm (freeglut): Add mesa to propagated inputs.