* Move the construction of the .pc files into src/tools
* Make more use of the built-in rules for variable substitution
* Make PKGCONFIG an Makefile variable for installing .pc files
* Use EPICS_PATCH_LEVEL for the final digit in the version number
Removed the -h option to convertRelease, use $ENV{EPICS_HOST_ARCH} instead.
Reworked variables associated with expandVars to make it simpler to use.
Split EPICS::Utils module into three parts.
Moved code from fullPathName.pl into the new EPICS::Path module.
Changed convertRelease.pl to use new modules.
Added some documentation to RELEASE_NOTES.html