patch applied (cabal): Use pkg-config to check for the packages specified in "pkgconfig-depends:"

Fri Aug 31 10:10:14 PDT 2007 Duncan Coutts <duncan@haskell.org> * Use pkg-config to check for the packages specified in "pkgconfig-depends:" And fill out the includeDirs, extraLibs, extraLibDirs, ccOptions and ldOptions with the results from pkg-config --cflags --libs M ./Distribution/Simple/Configure.hs -10 +87 M ./Distribution/Simple/Program.hs +8