Rename pthread_cond_timedwait_relative{,_np}

git-svn-id: https://svn.code.sf.net/p/mingw-w64/code@6595 4407c894-4637-0410-b4f5-ada5f102cad1
from trunk r6595: Rename pthread_cond_timedwait_relative{,_np}


git-svn-id: https://svn.code.sf.net/p/mingw-w64/code@6596 4407c894-4637-0410-b4f5-ada5f102cad1
Add basic ARM context definitions

git-svn-id: https://svn.code.sf.net/p/mingw-w64/code@6597 4407c894-4637-0410-b4f5-ada5f102cad1