Add some fairly important file extensions: bmp css doc mid midi mp2 mp3 xls.

Entries taken from the standard Debian mime.types file.

Lib/mimetypes.py

@@ -230,10 +230,13 @@ types_map = {
     '.avi': 'video/x-msvideo',
     '.bcpio': 'application/x-bcpio',
     '.bin': 'application/octet-stream',
+    '.bmp': 'image/x-ms-bmp',
     '.cdf': 'application/x-netcdf',
     '.cpio': 'application/x-cpio',
     '.csh': 'application/x-csh',
+    '.css': 'text/css',
     '.dll': 'application/octet-stream',
+    '.doc': 'application/msword',
     '.dvi': 'application/x-dvi',
     '.exe': 'application/octet-stream',
     '.eps': 'application/postscript',
@@ -251,9 +254,13 @@ types_map = {
     '.latex': 'application/x-latex',
     '.man': 'application/x-troff-man',
     '.me': 'application/x-troff-me',
+    '.mid': 'audio/midi',
+    '.midi': 'audio/midi',
     '.mif': 'application/x-mif',
     '.mov': 'video/quicktime',
     '.movie': 'video/x-sgi-movie',
+    '.mp2': 'audio/mpeg',
+    '.mp3': 'audio/mpeg',
     '.mpe': 'video/mpeg',
     '.mpeg': 'video/mpeg',
     '.mpg': 'video/mpeg',
@@ -302,6 +309,7 @@ types_map = {
     '.ustar': 'application/x-ustar',
     '.wav': 'audio/x-wav',
     '.xbm': 'image/x-xbitmap',
+    '.xls': 'application/excel',
     '.xml': 'text/xml',
     '.xsl': 'application/xml',
     '.xpm': 'image/x-xpixmap',