[AML] Fix pts error correction logic
FIX: [stereoscopic] fix 3D support for libstagefright and ios
[scrapers] Support XSLT transforms (XML->XML) in the scrapers
cosmetic: indenting
[sorting] don't apply airdate when sorting by year if an empty airdate is specified. fixes #14276
[ADDONS|SECURITY] Ensure our zip hasn't been tampered with before rollback.
fix: CArchive reading/writing of CVariant used different types for type. Fixes #14744.
[tests] add improved tests of CArchive taking CVariant to verify fix of #14744
Merge pull request #3872 from t-nelson/harden_addon_rollback

[ADDONS|SECURITY] Ensure our zip hasn't been tampered with before rollback
Merge pull request #3887 from koying/fix3droidios

FIX: [stereoscopic] fix 3D support for libstagefright and ios
changed: don't start the screen saver when minimized. Prevents the start of the ss when maximizing and an endless loop with some ss.
Merge pull request #3893 from wsoltys/screensaverfix

changed: don't start the screen saver when minimized.
[ios] - enable retina support for iPadAir and iPadMini2G
- don't build xsltproc - it pulls in a lot of dependencies which are not available for rbpi (and so linker would try to link in x86 libs found in the system - which fails for arm linkage)
- force our libxml2 - fixes compilation on rbpi
Merge pull request #3758 from jmarshallnz/xslt_scraper

XSLT support in scrapers
Merge pull request #3889 from jmarshallnz/fix_sortlabel_year

[sorting] don't apply airdate when sorting by year if airdate is empty.
[WIN32] changed: used repackaged libxslt and libxml2. No need for the packaging scripts (thanks karlson2k)
Merge pull request #3815 from ndogxj/patch-1

[AML] Fix pts error correction logic
changed: present with D3DPRESENT_DONOTWAIT to work around drivers busy spinning.