[PATCH] Unify Makefile indentation

Use <tab> instead of two spaces uniformly in the Makefile, even in the
ifdefs. Gives it a nice consistent look.

[jc: At the same time I indented the nested ifdefs to make them
slightly easier to read.]

Signed-off-by: Petr Baudis <pasky@ucw.cz>
Signed-off-by: Junio C Hamano <junkio@cox.net>

Makefile

@@ -87,7 +87,7 @@ PROG=   git-update-cache git-diff-files git-init-db git-write-tree \
 	git-update-server-info git-show-rev-cache git-build-rev-cache
 
 ifndef NO_CURL
-PROG+= git-http-pull
+	PROG+= git-http-pull
 endif
 
 LIB_FILE=libgit.a
@@ -133,17 +133,17 @@ ifdef MOZILLA_SHA1
 	SHA1_HEADER="mozilla-sha1/sha1.h"
 	LIB_OBJS += mozilla-sha1/sha1.o
 else
-ifdef PPC_SHA1
+	ifdef PPC_SHA1
 		SHA1_HEADER="ppc/sha1.h"
 		LIB_OBJS += ppc/sha1.o ppc/sha1ppc.o
-else
+	else
 		SHA1_HEADER=<openssl/sha.h>
-ifeq ($(shell uname -s),Darwin)
+		ifeq ($(shell uname -s),Darwin)
 			LIBS += -lcrypto -lssl
-else
+		else
 			LIBS += -lcrypto
-endif
-endif
+		endif
+	endif
 endif
 
 DEFINES += '-DSHA1_HEADER=$(SHA1_HEADER)'