Merge branch 'tb/avoid-gcc-on-darwin-10-6'

* tb/avoid-gcc-on-darwin-10-6:
  Revert "config.mak.uname: use clang for Mac OS X 10.6"

Author: gitster

config.mak.uname

@@ -103,9 +103,6 @@ ifeq ($(uname_S),Darwin)
 	ifeq ($(shell expr "$(uname_R)" : '[15]\.'),2)
 		NO_STRLCPY = YesPlease
 	endif
-	ifeq ($(shell test "`expr "$(uname_R)" : '\([0-9][0-9]*\)\.'`" -eq 10 && echo 1),1)
-		CC = clang
-	endif
 	ifeq ($(shell test "`expr "$(uname_R)" : '\([0-9][0-9]*\)\.'`" -ge 11 && echo 1),1)
 		HAVE_GETDELIM = YesPlease
 	endif