add library.xml for building separate library versions. windows and linux flags incoming.
add library.xml for building separate library versions. windows and linux flags incoming.

note that I added mac but generally on mac you link against
OpenAL.framework. iOS/mac use system openal, android uses
native-toolkit/openal-android , only windows and linux use this version.

vroad/openal,native-toolkit/openal,native-toolkit/openal,vroad/openal