gnu: icecat: Update to 45.3.0-gnu1-beta. Add fixes from Firefox ESR 45.4.0.
Includes fixes for CVE-2016-5250, CVE-2016-5257, CVE-2016-5261, CVE-2016-5270,
CVE-2016-5272, CVE-2016-5274, CVE-2016-5276, CVE-2016-5277, CVE-2016-5278,
CVE-2016-5280, CVE-2016-5281, and CVE-2016-5284.
* gnu/packages/gnuzilla.scm (mozilla-patch): New procedure.
(icecat): Update to 45.3.0-gnu1.
[source]: Add alternate source URI for the beta release. Update patches.
[inputs]: Replace 'sqlite' input with a customized sqlite with
SQLITE_ENABLE_DBSTAT_VTAB support.
[native-inputs]: Add 'which'.
* gnu/packages/patches/icecat-avoid-bundled-includes.patch: Rename to...
* gnu/packages/patches/icecat-avoid-bundled-libraries.patch: ... and adapt
to version 45.
* gnu/packages/patches/icecat-CVE-2016-2818-pt1.patch,
gnu/packages/patches/icecat-CVE-2016-2818-pt2.patch,
gnu/packages/patches/icecat-CVE-2016-2818-pt3.patch,
gnu/packages/patches/icecat-CVE-2016-2818-pt4.patch,
gnu/packages/patches/icecat-CVE-2016-2818-pt5.patch,
gnu/packages/patches/icecat-CVE-2016-2818-pt6.patch,
gnu/packages/patches/icecat-CVE-2016-2818-pt7.patch,
gnu/packages/patches/icecat-CVE-2016-2818-pt8.patch,
gnu/packages/patches/icecat-CVE-2016-2818-pt9.patch,
gnu/packages/patches/icecat-CVE-2016-2819.patch,
gnu/packages/patches/icecat-CVE-2016-2821.patch,
gnu/packages/patches/icecat-CVE-2016-2824.patch,
gnu/packages/patches/icecat-CVE-2016-2828.patch,
gnu/packages/patches/icecat-CVE-2016-2831.patch: Delete files.
* gnu/local.mk (dist_patch_DATA): Update accordingly.
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