[win32] update and clean exclude.txt used in BuildSetup
[win32] installer: remove language checkbox and just install all languages
[win32] installer: remove unused code
[win32] installer: move addon copy
[win32] installer: remove outdated code
[win32] remove unused build  .bat files
ActiveAE: increase timeout for MakeStream
AE: remove audioSinkBufferDurationMsec from advances settings, it does more harm than any good
add some extra, commonly used, aspect flags for skins
[pydocs] don't add core code comments to pydocs
Merge pull request #3172 from MartijnKaijser/win32_installer_cleanup

[win32] update and clean windows installer
[win32] installer: fix setting wrong output path after 0a16a920f8235b9b0adec746a1be472f3cb52767
[win32] Util::GetHomePath: workaround for windows overestimate buffer size
[win32] Util::GetHomePath: fix compiler warning
[win32] Put 'XBMC_HOME' to the project for easy build and run
configure: add initial support for CC_FOR_BUILD, CXX_FOR_BUILD, CFLAGS_FOR_BUILD, CXXFLAGS_FOR_BUILD, LDFLAGS_FOR_BUILD
configure/depends: rename 'USE_TEXTUREPACKER_NATIVE_ROOT' to 'NATIVE_ROOT' for general usage to use with other hostbuilt tools. Add $NATIVE_ROOT/lib to LDFLAGS_FOR_BUILD and $NATIVE_ROOT/include to CFLAGS_FOR_BUILD and CXXFLAGS_FOR_BUILD
libsquish: rework to support native builds with *_FOR_BUILD
Texturepacker: rework to support native builds with *_FOR_BUILD, Texturepacker builds always against libsquish-native.so, which is ok because CXX_FOR_BUILD=CXX, CXXFLAGS_FOR_BUILD=CXXFLAGS and LDFLAGS_FOR_BUILD=LDFLAGS on non crosscompiled builds, sothere libsquish-native is the same like libsquish
configure: cleanup, we dont need 'use_texturepacker_native' anymore and dont need to force 'use_texturepacker' (its enabled by default).