Makefile: add install-man rules (quick and normal)

Signed-off-by: NJunio C Hamano <gitster@pobox.com>

Documentation/Makefile

@@ -87,7 +87,9 @@ man7: $(DOC_MAN7)
 
 info: git.info gitman.info
 
-install: man
+install: install-man
+
+install-man: man
 	$(INSTALL) -d -m 755 $(DESTDIR)$(man1dir)
 	$(INSTALL) -d -m 755 $(DESTDIR)$(man5dir)
 	$(INSTALL) -d -m 755 $(DESTDIR)$(man7dir)
@@ -220,7 +222,9 @@ $(patsubst %.txt,%.html,$(wildcard howto/*.txt)): %.html : %.txt
 install-webdoc : html
 	sh ./install-webdoc.sh $(WEBDOC_DEST)
 
-quick-install:
+quick-install: quick-install-man
+
+quick-install-man:
 	sh ./install-doc-quick.sh $(DOC_REF) $(DESTDIR)$(mandir)
 
 quick-install-html:

INSTALL

@@ -126,8 +126,9 @@ Issues of note:
 
 	http://www.kernel.org/pub/software/scm/git/docs/
 
-   There are also "make quick-install-doc" and "make quick-install-html"
-   which install preformatted man pages and html documentation.
+   There are also "make quick-install-doc", "make quick-install-man"
+   and "make quick-install-html" which install preformatted man pages
+   and html documentation.
    This does not require asciidoc/xmlto, but it only works from within
    a cloned checkout of git.git with these two extra branches, and will
    not work for the maintainer for obvious chicken-and-egg reasons.

Makefile

@@ -1405,6 +1405,9 @@ endif
 install-doc:
 	$(MAKE) -C Documentation install
 
+install-man:
+	$(MAKE) -C Documentation install-man
+
 install-html:
 	$(MAKE) -C Documentation install-html
 
@@ -1414,6 +1417,9 @@ install-info:
 quick-install-doc:
 	$(MAKE) -C Documentation quick-install
 
+quick-install-man:
+	$(MAKE) -C Documentation quick-install-man
+
 quick-install-html:
 	$(MAKE) -C Documentation quick-install-html