Makefile: add missing phony target

Add some missing phony target to Makefile.
Signed-off-by: NElia Pinto <gitter.spiros@gmail.com>
Helped-by: NMatthieu Moy <Matthieu.Moy@imag.fr>
Reviewed-by: NMatthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Makefile

@@ -2026,6 +2026,7 @@ $(VCSSVN_LIB): $(VCSSVN_OBJS)
 
 export DEFAULT_EDITOR DEFAULT_PAGER
 
+.PHONY: doc man html info pdf
 doc:
 	$(MAKE) -C Documentation all
 
@@ -2069,6 +2070,7 @@ po/git.pot: $(GENERATED_H) FORCE
 		$(LOCALIZED_PERL)
 	mv $@+ $@
 
+.PHONY: pot
 pot: po/git.pot
 
 POFILES := $(wildcard po/*.po)
@@ -2278,6 +2280,7 @@ mergetools_instdir_SQ = $(subst ','\'',$(mergetools_instdir))
 
 install_bindir_programs := $(patsubst %,%$X,$(BINDIR_PROGRAMS_NEED_X)) $(BINDIR_PROGRAMS_NO_X)
 
+.PHONY: profile-install profile-fast-install
 profile-install: profile
 	$(MAKE) install
 
@@ -2344,6 +2347,8 @@ endif
 	done && \
 	./check_bindir "z$$bindir" "z$$execdir" "$$bindir/git-add$X"
 
+.PHONY: install-gitweb install-doc install-man install-html install-info install-pdf
+.PHONY: quick-install-doc quick-install-man quick-install-html
 install-gitweb:
 	$(MAKE) -C gitweb install
 
@@ -2403,6 +2408,7 @@ rpm: dist
 
 htmldocs = git-htmldocs-$(GIT_VERSION)
 manpages = git-manpages-$(GIT_VERSION)
+.PHONY: dist-doc distclean
 dist-doc:
 	$(RM) -r .doc-tmp-dir
 	mkdir .doc-tmp-dir
@@ -2471,6 +2477,8 @@ ALL_COMMANDS += git
 ALL_COMMANDS += gitk
 ALL_COMMANDS += gitweb
 ALL_COMMANDS += git-gui git-citool
+
+.PHONY: check-docs
 check-docs::
 	@(for v in $(ALL_COMMANDS); \
 	do \
@@ -2515,6 +2523,7 @@ check-builtins::
 ### Test suite coverage testing
 #
 .PHONY: coverage coverage-clean coverage-compile coverage-test coverage-report
+.PHONY: coverage-untested-functions cover_db cover_db_html
 .PHONY: coverage-clean-results
 
 coverage: