Ticket #2746: Add WebM support

Signed-off-by: Slava Zanko <slavazanko@gmail.com>

misc/filehighlight.ini

@@ -37,7 +37,7 @@
     extensions=c;h;cc;hh;cpp;cxx;hpp;asm;py;pl;pm;inc;cgi;php;phps;js;java;jav;jasm;sh;bash;diff;patch;pas;tcl;tk;awk;m4;st;mak;sl;ada;caml;ml;mli;mly;mll;mlp;sas;prg;hs;hi;erl
 
 [media]
-    extensions=mp2;mp3;mpg;ogg;mpeg;wav;avi;asf;mov;mol;mpl;xm;mod;it;med;mid;midi;s3m;umx;vob;mkv;flv;mp4;m3u;flac;ape;wma;wmv;3gp
+    extensions=mp2;mp3;mpg;ogg;mpeg;wav;avi;asf;mov;mol;mpl;xm;mod;it;med;mid;midi;s3m;umx;vob;mkv;flv;mp4;m3u;flac;ape;wma;wmv;3gp;webm
 
 [graph]
     extensions=jpg;jpeg;gif;png;tif;pcx;bmp;xpm;xbm;eps;pic;rle;ico;wmf;omf;ai;cdr

misc/mc.ext.in

@@ -501,6 +501,13 @@ regex/\.([oO][gG][mM])$
 regex/\.([rR][aA]?[mM])$
 	Open=@EXTHELPERSDIR@/video.sh open ram
 
+# WebM
+regex/\.([wW][eE][bB][mM])$
+    Include=video
+
+type/WebM
+    Include=video
+
 include/video
 	Open=@EXTHELPERSDIR@/video.sh open ALL_FORMATS