new (?) cmake problem with libalkimia version

[Jack Ostroff]

I just tried recompiling from git head branch 5.0.  It claimed it could  
not find an appropriate configuration file for libalkimia5.  It found  
version 8.0.0 of the relevant cmake files, which are there because I  
currently have libalkimia installed from git head.  For now, I'll just  
reinstall the released libalkimia.  My question is whether we do need  
to restrict libalkimia to version 7.0.0 or if it would be OK to  
allow >= instead of just =.

Jack