Makefile now builds using cabal, taking advantage of cabal's automatic detection of appropriate build flags.

The only thing lost is ./ghci

Speed: make fast used to take 20 seconds here, when rebuilding from
touching Command/Unused.hs. With cabal, it's 29 seconds.

Utility/Lsof.hs

@@ -56,7 +56,7 @@ query opts =
 type LsofParser = String -> [(FilePath, LsofOpenMode, ProcessInfo)]
 
 parse :: LsofParser
-#ifdef WITH_ANDROID
+#ifdef __ANDROID__
 parse = parseDefault
 #else
 parse = parseFormatted