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
