Fix filerevision-raw.tmpl

Two bugs:
- conteXt-type instead of conteNt-type
- trailing newline

The easiest way to fix the second one (and keep it fixed) is to put
everything inline in map-raw.

templates/map-raw

@@ -1,16 +1,16 b''
 header = header-raw.tmpl
 footer = ''
 changeset = changeset-raw.tmpl
 difflineplus = '#line#'
 difflineminus = '#line#'
 difflineat = '#line#'
 diffline = '#line#'
 changesetparent = '# parent: #node#'
 changesetchild = '# child: #node#'
 filenodelink = ''
-filerevision = filerevision-raw.tmpl
+filerevision = 'Content-Type: #mimetype#\nContent-Disposition: filename=#file#\n\n#raw#'
 fileline = '#line#'
 diffblock = '#lines#'
 filediff = filediff-raw.tmpl
 fileannotate = fileannotate-raw.tmpl
 annotateline = '#author#@#rev#: #line#'