gnu: icecat: Apply security updates for CVE-2014-{1587,1590,1592,1593,1594}.
* gnu/packages/patches/icecat-CVE-2014-1587-bug-1042567.patch,
gnu/packages/patches/icecat-CVE-2014-1587-bug-1072847.patch,
gnu/packages/patches/icecat-CVE-2014-1587-bug-1079729.patch,
gnu/packages/patches/icecat-CVE-2014-1587-bug-1080312.patch,
gnu/packages/patches/icecat-CVE-2014-1587-bug-1089207.patch,
gnu/packages/patches/icecat-CVE-2014-1590.patch,
gnu/packages/patches/icecat-CVE-2014-1592.patch,
gnu/packages/patches/icecat-CVE-2014-1593.patch,
gnu/packages/patches/icecat-CVE-2014-1594.patch: New files.
* gnu-system.am (dist_patch_DATA): Add them.
* gnu/packages/gnuzilla.scm (icecat): Add them.