Fix infinite loop while viewing "EPG: Timeline" window

With invalid begin/end times, the for loop in GUIEPGContainer.cpp L#825 (https://github.com/xbmc/xbmc/blob/5f33d290e/xbmc/epg/GUIEPGGridContainer.cpp#L825) loops endlessly, freezing XBMC when the user views the "EPG: Timeline" window. Solve this by adding check for invalid end times.
dvdplayer: disallow hw accel of SD mpeg2's

They are many dvd rips with non profile conformant streams that just
give garbage when rune using the hw decoder.
Merge pull request #3395 from garbear/invalid-dates

Fix infinite loop while viewing "EPG: Timeline" window
Merge pull request #3417 from elupus/mpeg2sd

dvdplayer: disallow hw accel of SD mpeg2's
[confluence] fix white haze on texture in video OSD
CGUIWindowSettingsCategory: fix description not being updated when moving from a setting to a category
fixed: use the proper make instead of calling 'make' directly

fixes builds on freebsd
cmake buildsystem
sq
add tests needed by new u16 string stuff
wrap cmyth properly
move some more install related stuff to install script
move all install code to platform install script
allow building without doxygen
fix building with yajl2
generate scripts in a subdir to avoid problems configuring in top dir
properly wrap library.xbmc.foo
link to threading lib
remove duplicate mpeg2 entry
properly locate java and swig

also use the detected paths for java, swig and doxygen