update pr-downloader: allow rapid downloads from ports != 80
fix crash when AI lib can't be loaded
fix start of SYNCDEBUG builds
fix uninit var
add Spring.GetClipboard() & Spring.SetClipboard(string text)
fix Spring.IsUnitIcon
fix compile
fix headless linking
remove unused class
Merge branch 'develop' of git://github.com/spring/spring into develop