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.

Command/Add.hs

@@ -21,7 +21,7 @@ import Annex.Perms
 import Annex.Link
 import qualified Annex
 import qualified Annex.Queue
-#ifndef WITH_ANDROID
+#ifndef __ANDROID__
 import Utility.Touch
 #endif
 import Utility.FileMode
@@ -166,7 +166,7 @@ link file key hascontent = handle (undo file key) $ do
 	l <- calcGitLink file key
 	makeAnnexLink l file
 
-#ifndef WITH_ANDROID
+#ifndef __ANDROID__
 	when hascontent $ do
 		-- touch the symlink to have the same mtime as the
 		-- file it points to