Makefile: move GIT-VERSION-FILE dependencies closer to use

There is a list of all of the targets which depend on
GIT-VERSION-FILE, but it can be quite far from the actual
point where the targets actually use $(GIT_VERSION). This
can make it hard to verify that each use of $(GIT_VERSION)
has a matching dependency.

This patch moves the dependency closer to the actual build
instructions, which makes verification easier.  This also
fixes the generation of "configure", which did not properly
mark the dependency.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Makefile

@@ -1991,7 +1991,7 @@ builtin/help.sp builtin/help.s builtin/help.o: EXTRA_CPPFLAGS = \
 	'-DGIT_MAN_PATH="$(mandir_SQ)"' \
 	'-DGIT_INFO_PATH="$(infodir_SQ)"'
 
-version.sp version.s version.o: GIT-USER-AGENT
+version.sp version.s version.o: GIT-VERSION-FILE GIT-USER-AGENT
 version.sp version.s version.o: EXTRA_CPPFLAGS = \
 	'-DGIT_VERSION="$(GIT_VERSION)"' \
 	'-DGIT_USER_AGENT=$(GIT_USER_AGENT_CQ_SQ)'
@@ -2047,7 +2047,7 @@ $(patsubst %.perl,%,$(SCRIPT_PERL)): perl/perl.mak
 perl/perl.mak: GIT-CFLAGS GIT-PREFIX perl/Makefile perl/Makefile.PL
 	$(QUIET_SUBDIR0)perl $(QUIET_SUBDIR1) PERL_PATH='$(PERL_PATH_SQ)' prefix='$(prefix_SQ)' $(@F)
 
-$(patsubst %.perl,%,$(SCRIPT_PERL)): % : %.perl
+$(patsubst %.perl,%,$(SCRIPT_PERL)): % : %.perl GIT-VERSION-FILE
 	$(QUIET_GEN)$(RM) $@ $@+ && \
 	INSTLIBDIR=`MAKEFLAGS= $(MAKE) -C perl -s --no-print-directory instlibdir` && \
 	sed -e '1{' \
@@ -2104,18 +2104,13 @@ $(patsubst %.py,%,$(SCRIPT_PYTHON)): % : unimplemented.sh
 	mv $@+ $@
 endif # NO_PYTHON
 
-configure: configure.ac
+configure: configure.ac GIT-VERSION-FILE
 	$(QUIET_GEN)$(RM) $@ $<+ && \
 	sed -e 's/@@GIT_VERSION@@/$(GIT_VERSION)/g' \
 	    $< > $<+ && \
 	autoconf -o $@ $<+ && \
 	$(RM) $<+
 
-# These can record GIT_VERSION
-version.o git.spec \
-	$(patsubst %.perl,%,$(SCRIPT_PERL)) \
-	: GIT-VERSION-FILE
-
 XDIFF_OBJS += xdiff/xdiffi.o
 XDIFF_OBJS += xdiff/xprepare.o
 XDIFF_OBJS += xdiff/xutils.o
@@ -2650,7 +2645,7 @@ quick-install-html:
 
 ### Maintainer's dist rules
 
-git.spec: git.spec.in
+git.spec: git.spec.in GIT-VERSION-FILE
 	sed -e 's/@@VERSION@@/$(GIT_VERSION)/g' < $< > $@+
 	mv $@+ $@