ARIA common files can go into multiple branches

A while ago I set up automatic updating of the aria-common files, so 
when a commit goes into the aria-common repository, a copy goes into the 
common subdirectory of the other repos. Previously this only happened 
for the master branch, but there are other branches that should have 
this. I've parameterized this so the update can now go to whichever 
branches are required. Let me know if you want aria-common to be 
automatically synced to additional branches in your repo. Michael