add support for genshi and mako

doc/NERD_commenter.txt

@@ -809,6 +809,7 @@ if your face looked like a toaster and a t-rex put together? :(
     - add support for CVScommit
     - add support for asciidoc, git and gitrebase. Thanks to Simon Ruderich.
     - use # for gitcommit comments, thanks to Simon Ruderich.
+    - add support for mako and genshi, thanks to Keitheis.
 
 2.2.0
     - rewrote the mappings system to be more "standard".
@@ -1045,6 +1046,7 @@ Elias Pipping                       automake
 Edwin Benavides                     actionscript, processing
 Thomas Rowe                         hostsaccess
 Simon Ruderich                      asciidoc, git, gitcommit, gitrebase
+Keitheis                            mako, genshi
 
 ==============================================================================
 9. License                                                    *NERDComLicense*

plugin/NERD_commenter.vim

@@ -341,6 +341,8 @@ function s:SetUpForNewFiletype(filetype, forceReset)
         call s:MapDelimiters('--', '')
     elseif a:filetype == "geek"
         call s:MapDelimiters('GEEK_COMMENT:', '')
+    elseif a:filetype == "genshi"
+        call s:MapDelimitersWithAlternative('<!--','-->', '{#', '#}')
     elseif a:filetype == "gentoo-conf-d"
         call s:MapDelimiters('#', '')
     elseif a:filetype == "gentoo-env-d"
@@ -489,6 +491,8 @@ function s:SetUpForNewFiletype(filetype, forceReset)
         call s:MapDelimiters('#','')
     elseif a:filetype == "make"
         call s:MapDelimiters('#','')
+    elseif a:filetype == "mako"
+        call s:MapDelimiters('##', '')
     elseif a:filetype == "man"
         call s:MapDelimiters('."', '')
     elseif a:filetype == "map"