Fix the installation path for html documentation

026fa0d (Move computation of absolute paths from Makefile to runtime in
preparation for RUNTIME_PREFIX, 2009-01-18) broke the installation of html
documentation.  A relative htmldir is given to Documentation/Makefile and
html documentations are installed in a subdirectory of "Documentation" in
the source tree.

Fix this by not exporting htmldir from Makefile; this allows
Documentation/Makefile to compute the htmldir from the prefix.

Signed-off-by: Michael J Gruber <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: Michael J Gruber

Makefile

@@ -228,7 +228,7 @@ GITWEB_FAVICON = git-favicon.png
 GITWEB_SITE_HEADER =
 GITWEB_SITE_FOOTER =
 
-export prefix bindir sharedir htmldir sysconfdir
+export prefix bindir sharedir sysconfdir
 
 CC = gcc
 AR = ar