Remove main.bat
Remove unused toolchains
No upper CMAKE_SYSTEM_*
Add ios.cmake
Clean ios-xcode.cmake
Return int in main()
Add ios support
Clean code of 'abi'
Clean vim modeline
Add sdk path support
Fix bug of "AR-NOT-FOUND"
New pattern: sdk=ndk-r8e/armv7a/gnustl_static
Fix bug of copy system libraries when packing.