patch applied (cabal): better error messages for erroneous local C headers

Thu Apr 8 19:25:43 PDT 2010 mcallister.keegan@gmail.com * better error messages for erroneous local C headers Addresses the issue in tickets #532, #648. When the all-together test of C libraries and headers fails, use only the preprocessor to probe the headers individually. If they all check out, give a more equivocal error message and suggest -v3. M ./Distribution/Simple/Configure.hs -7 +21 View patch online: http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=cabal;a=darcs_commitdiff;h=2...