D-Programming-Language/dmd — pull request #1795 by glycerine (2013-03-25 04:13:06+00:00)
Title: Fix9805

(revised pull request, replacing the incorrectly aimed pull req#1794.)

Enable the optional DFLAGS_PRE env var to pre-pend arguments to the dmd command line. It is the complement to DFLAGS, which always appends.