gnu: Update packages to use 'non-copyleft' instead of 'bsd-style'.

* gnu/packages/avr.scm, gnu/packages/compression.scm,
  gnu/packages/curl.scm, gnu/packages/cyrus-sasl.scm,
  gnu/packages/databases.scm, gnu/packages/firmware.scm,
  gnu/packages/flex.scm, gnu/packages/fontutils.scm,
  gnu/packages/gd.scm, gnu/packages/ghostscript.scm,
  gnu/packages/gnunet.scm, gnu/packages/graphics.scm,
  gnu/packages/hugs.scm, gnu/packages/image.scm,
  gnu/packages/linux.scm, gnu/packages/mail.scm,
  gnu/packages/maths.scm, gnu/packages/mit-krb5.scm,
  gnu/packages/python.scm, gnu/packages/rdf.scm,
  gnu/packages/ssh.scm, gnu/packages/tcl.scm,
  gnu/packages/xdisorg.scm, gnu/packages/xiph.scm,
  gnu/packages/yasm.scm, gnu/packages/zip.scm: Use 'non-copyleft'
  instead of 'bsd-style'.

gnu: Add vigra.

* gnu/packages/image.scm (vigra): New variable.

Co-authored-by: John Darrington <john@darrington.wattle.id.au>

gnu: Add libungif.

* gnu/packages/image.scm (libungif): New variable.

Merge branch 'core-updates'.

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: openjpeg: Upgrade to 2.1.0.

* gnu/packages/image.scm (openjpeg): Upgrade to 2.1.0.
  (openjpeg-2.0): New variable.
* gnu/packages/pdf.scm (mupdf)[inputs]: Use openjpeg-2.0.

Merge branch 'core-updates'

Conflicts:
	gnu/packages/bootstrap.scm

gnu: libpng: Update to 1.5.21.

* gnu/packages/image.scm (libpng): Update to 1.5.21.

Merge branch 'master' into core-updates

gnu: openjpeg: Update to 2.0.1.

* gnu/packages/image.scm (openjpeg): Update to 2.0.1.

gnu: Add openjpeg-1.

* gnu/packages/image.scm (openjpeg-1): New variable.

gnu: openjpeg: update home page URL.

* gnu/packages/image.scm (openjpeg)[home-page]: Update URL.

gnu: freeimage: Remove MIPS from supported-systems.

* gnu/packages/image.scm (freeimage): Drop support for "mips64el-linux".

gnu: Add freeimage.

* gnu/packages/image.scm (freeimage): New variable.

licenses: Add 'imlib2'.

* guix/licenses.scm (imlib2): New variable.
* gnu/packages/image.scm (imlib2): Use it.

gnu: Some cleanup based on lint checkers.

* gnu/packages/admin.scm, gnu/packages/aidc.scm, gnu/packages/algebra.scm,
  gnu/packages/apr.scm, gnu/packages/avahi.scm, gnu/packages/backup.scm,
  gnu/packages/base.scm, gnu/packages/calcurse.scm, gnu/packages/cdrom.scm,
  gnu/packages/check.scm, gnu/packages/compression.scm, gnu/packages/cook.scm,
  gnu/packages/crypto.scm, gnu/packages/cryptsetup.scm, gnu/packages/curl.scm,
  gnu/packages/cyrus-sasl.scm, gnu/packages/databases.scm,
  gnu/packages/doxygen.scm, gnu/packages/dwm.scm, gnu/packages/elf.scm,
  gnu/packages/emacs.scm, gnu/packages/feh.scm, gnu/packages/file.scm,
  gnu/packages/fish.scm, gnu/packages/flex.scm, gnu/packages/fltk.scm,
  gnu/packages/fontutils.scm, gnu/packages/games.scm, gnu/packages/gcal.scm,
  gnu/packages/gcc.scm, gnu/packages/geeqie.scm, gnu/packages/ghostscript.scm,
  gnu/packages/gimp.scm, gnu/packages/gl.scm, gnu/packages/glib.scm,
  gnu/packages/gnome.scm, gnu/packages/gnunet.scm, gnu/packages/gnupg.scm,
  gnu/packages/gperf.scm, gnu/packages/grub.scm, gnu/packages/gsasl.scm,
  gnu/packages/gtk.scm, gnu/packages/guile-wm.scm, gnu/packages/guile.scm,
  gnu/packages/hurd.scm, gnu/packages/icu4c.scm, gnu/packages/image.scm,
  gnu/packages/imagemagick.scm, gnu/packages/irssi.scm, gnu/packages/kde.scm,
  gnu/packages/libdaemon.scm, gnu/packages/libevent.scm,
  gnu/packages/libidn.scm, gnu/packages/libusb.scm, gnu/packages/linux.scm,
  gnu/packages/lout.scm, gnu/packages/lsh.scm, gnu/packages/lsof.scm,
  gnu/packages/lua.scm, gnu/packages/maths.scm, gnu/packages/mcrypt.scm,
  gnu/packages/mp3.scm, gnu/packages/netpbm.scm, gnu/packages/noweb.scm,
  gnu/packages/ocaml.scm, gnu/packages/openssl.scm, gnu/packages/pcre.scm,
  gnu/packages/pdf.scm, gnu/packages/pkg-config.scm,
  gnu/packages/pretty-print.scm, gnu/packages/python.scm, gnu/packages/qt.scm,
  gnu/packages/rsync.scm, gnu/packages/scheme.scm, gnu/packages/scrot.scm,
  gnu/packages/sdl.scm, gnu/packages/skribilo.scm, gnu/packages/ssh.scm,
  gnu/packages/stalonetray.scm, gnu/packages/tcl.scm, gnu/packages/tcsh.scm,
  gnu/packages/telephony.scm, gnu/packages/texlive.scm, gnu/packages/tor.scm,
  gnu/packages/valgrind.scm, gnu/packages/version-control.scm,
  gnu/packages/vim.scm, gnu/packages/vpn.scm, gnu/packages/w3m.scm,
  gnu/packages/web.scm, gnu/packages/wordnet.scm, gnu/packages/xiph.scm,
  gnu/packages/xml.scm, gnu/packages/xorg.scm, gnu/packages/zile.scm,
  gnu/packages/zip.scm, gnu/packages/zsh.scm [synopsis, description]: Adjust
  according to lint checkers.
* gnu/packages/fltk.scm (fltk)[source]: Wrap long line in uri.
* /gnu/packages/xiph.scm (libogg, libtheora, vorbis-tools)[source]: Same.

gnu: libjpeg: Upgrade to version 9a.

* gnu/packages/image.scm (libjpeg): Upgrade to version 9a.

gnu: Move giflib to (gnu packages image).

* gnu/packages/giflib.scm: Remove.  Move the contents to (gnu packages image).
* gnu-system.am (GNU_SYSTEM_MODULES): Remove giflib file name.
* gnu/packages/emacs.scm: Remove giflib module name.
* gnu/packages/image.scm (giflib): New variable.

gnu: Add giblib.

* gnu/packages/image.scm (giblib): New variable.

gnu: Add imlib2.

* gnu/packages/image.scm (imlib2): New variable.