largefiles: rename functions and methods to match desired behavior
The original intent was that the largefiles would primarily be in the
repository, with the global cache being only that--a cache. The naming
conventions and actual intent have both strayed. In this first patch, the
naming conventions are switched to match the actual intent, as are the
configuration options.
$ echo '[Section]' >> $HGRCPATH
$ echo 'KeY = Case Sensitive' >> $HGRCPATH
$ echo 'key = lower case' >> $HGRCPATH
$ hg showconfig Section
Section.KeY=Case Sensitive
Section.key=lower case