Added adl_gen library.
Modified configure/RELEASE to add EPICS_EXTENSIONS in the list.
Added hvcaApp.
Here are a lot of stale files from clas6 era those left as is just in case HPS will need those.
Added the general directory.
Cleaned up not all but a lot of clas6 era files.
Copied adl files from Stepan's directory into medm directory.
Resolved conflicts merging nerses73:master