put the major version in the SONAME
put the major version in the SONAME

This makes it easier to manage the version of chipmunk. When you bump
theh major version it will automatically bump the SONAME. This is needed
for proper compatibility management.

xuanloctn/chipmunk-physics,AntonioModer/Chipmunk2D,ycaihua/Chipmunk2D,dipankar-das/Chipmunk2D,ycaihua/Chipmunk2D,xuanloctn/chipmunk-physics,dipankar-das/Chipmunk2D,lqefn/Chipmunk2D,dipankar-das/Chipmunk2D,TukekeSoft/Chipmunk2D,DNESS/Chipmunk2D,TheCodez/Chipmunk2D,TheCodez/Chipmunk2D,slembcke/Chipmunk2D,kennethdmiller3/Chipmunk-Physics,ycaihua/Chipmunk2D,spacelan/Chipmunk2D,ycaihua/Chipmunk2D,lqefn/Chipmunk2D,xuanloctn/chipmunk-physics,TukekeSoft/Chipmunk2D,TheCodez/Chipmunk2D,viblo/Chipmunk2D,spacelan/Chipmunk2D,kennethdmiller3/Chipmunk-Physics,spacelan/Chipmunk2D,slembcke/Chipmunk2D,TukekeSoft/Chipmunk2D,AntonioModer/Chipmunk2D,spacelan/Chipmunk2D,viblo/Chipmunk2D,TukekeSoft/Chipmunk2D,dipankar-das/Chipmunk2D,DNESS/Chipmunk2D,DNESS/Chipmunk2D,spacelan/Chipmunk2D,DNESS/Chipmunk2D,ycaihua/Chipmunk2D,TheCodez/Chipmunk2D,dipankar-das/Chipmunk2D,AntonioModer/Chipmunk2D,viblo/Chipmunk2D,slembcke/Chipmunk2D,AntonioModer/Chipmunk2D,kennethdmiller3/Chipmunk-Physics,xuanloctn/chipmunk-physics,viblo/Chipmunk2D,lqefn/Chipmunk2D,kennethdmiller3/Chipmunk-Physics,lqefn/Chipmunk2D,xuanloctn/chipmunk-physics,AntonioModer/Chipmunk2D,DNESS/Chipmunk2D