add ogg, and fix a few old mistakes

Reference: /n/atom/patch/applied2013/fileogg
Date: Wed Jun 19 03:39:00 CES 2013
Signed-off-by: quanstro@quanstro.net

--- /sys/src/cmd/file.c	Wed Jun 19 03:38:45 2013
+++ /sys/src/cmd/file.c	Wed Jun 19 03:38:45 2013
@@ -99,7 +99,6 @@
 
 } language[] =
 {
-	Normal,	0,	0x00a0,	0x00ff,	"Latin",
 	Normal,	0,	0x0100,	0x01FF,	"Extended Latin",
 	Normal,	0,	0x0370,	0x03FF,	"Greek",
 	Normal,	0,	0x0400,	0x04FF,	"Cyrillic",
@@ -338,7 +337,7 @@
 		return;
 	}
 	if(mbuf->mode & DMDIR) {
-		print(mime ? "text/directory\n" : "directory\n");
+		print(mime ? OCTET : "directory\n");
 		return;
 	}
 	if(mbuf->type != 'M' && mbuf->type != '|') {
@@ -1275,7 +1274,7 @@
 		s++;			/* skip letter */
 		d += strtoul(s, &s, 10);
 	}
-	
+
 	switch(d){
 	case 32:
 	case 24: