Mark Rivers saw this warning when he forgot to configure and build a
dependent module properly. The additional information given by this
change would have helped him track down the problem faster.
GNUmake will *usually* spot recursive "include" loops first, but
not if the loop is in another module that we're just checking.
In that case Release.pm eats file descriptors until they run out
without this fix.
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