hgweb: add raw template to hgwebdir

templates/raw/index.tmpl

@@ -0,0 +1,2 b''
+#header#
+#entries%indexentry#

templates/raw/map

@@ -17,3 +17,5 b" annotateline = '#author#@#rev#: #line#'"
 manifest = manifest.tmpl
 manifestdirentry = 'drwxr-xr-x {basename}\n'
 manifestfileentry = '{permissions|permissions} {size} {basename}\n'
+index = index.tmpl
+indexentry = '#url#\n'