Log Message:
update to 5.2.1
most notable changes:
        * Added -M --memory-limit argument to dmalloc to limit allocations.
        * Due to public pressure, I've made free(0L) not an error by default.
	-some new format specifiers for logfile expansion
	-bugfixes
pkgsrc:
	-build and install thread support (not tested with GNU pth so far)
	-arrgh - need a patch so that libraries are not stripped on install