Fix get_revision, small cleanup in build
Fix get_revision, small cleanup in build

SuperStarPL/engine,guycalledfrank/engine,maxwellalive/engine,shinate/engine,horryq/engine-1,guycalledfrank/engine,MicroWorldwide/PlayCanvas,nizihabi/engine,maxwellalive/engine,RainsSoft/engine,RainsSoft/engine,3DGEOM/engine,horryq/engine-1,sereepap2029/playcanvas,shinate/engine,3DGEOM/engine,aidinabedi/playcanvas-engine,playcanvas/engine,nizihabi/engine,sereepap2029/playcanvas,horryq/engine-1,nizihabi/engine,3DGEOM/engine,sereepap2029/playcanvas,sanyaade-teachings/engine,sanyaade-teachings/engine,H1Gdev/engine,playcanvas/engine,aidinabedi/playcanvas-engine,maxwellalive/engine,SuperStarPL/engine,MicroWorldwide/PlayCanvas,H1Gdev/engine,SuperStarPL/engine,RainsSoft/engine,shinate/engine,sanyaade-teachings/engine