FindXercesC: Find Cygwin libraries
Cygwin builds name the library cygxerces-c-<major>.<minor>
. No D suffix for debug.
Reformat the library name variants to keep it readable.
Cygwin builds name the library cygxerces-c-<major>.<minor>
. No D suffix for debug.
Reformat the library name variants to keep it readable.