Makefile: install cgit.{css,png} in CGIT_DATA_PATH

CGIT_DATA_PATH defaults to CGIT_SCRIPT_PATH, but allows users to
install the cgi and the data files in different locations.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

Makefile

@@ -1,6 +1,7 @@
 CGIT_VERSION = v0.8.1
 CGIT_SCRIPT_NAME = cgit.cgi
 CGIT_SCRIPT_PATH = /var/www/htdocs/cgit
+CGIT_DATA_PATH = $(CGIT_SCRIPT_PATH)
 CGIT_CONFIG = /etc/cgitrc
 CACHE_ROOT = /var/cache/cgit
 SHA1_HEADER = <openssl/sha.h>
@@ -138,13 +139,14 @@ test: all
 install: all
 	$(INSTALL) -m 0755 -d $(DESTDIR)$(CGIT_SCRIPT_PATH)
 	$(INSTALL) -m 0755 cgit $(DESTDIR)$(CGIT_SCRIPT_PATH)/$(CGIT_SCRIPT_NAME)
-	$(INSTALL) -m 0644 cgit.css $(DESTDIR)$(CGIT_SCRIPT_PATH)/cgit.css
-	$(INSTALL) -m 0644 cgit.png $(DESTDIR)$(CGIT_SCRIPT_PATH)/cgit.png
+	$(INSTALL) -m 0755 -d $(DESTDIR)$(CGIT_DATA_PATH)
+	$(INSTALL) -m 0644 cgit.css $(DESTDIR)$(CGIT_DATA_PATH)/cgit.css
+	$(INSTALL) -m 0644 cgit.png $(DESTDIR)$(CGIT_DATA_PATH)/cgit.png
 
 uninstall:
 	rm -f $(CGIT_SCRIPT_PATH)/$(CGIT_SCRIPT_NAME)
-	rm -f $(CGIT_SCRIPT_PATH)/cgit.css
-	rm -f $(CGIT_SCRIPT_PATH)/cgit.png
+	rm -f $(CGIT_DATA_PATH)/cgit.css
+	rm -f $(CGIT_DATA_PATH)/cgit.png
 
 clean:
 	rm -f cgit VERSION *.o *.d