Fix extension name comparison for DLL files

code/qcommon/q_shared.c

@@ -82,6 +82,30 @@ void COM_StripExtension( const char *in, char *out, int destsize )
 		Q_strncpyz(out, in, destsize);
 }
 
+/*
+============
+COM_CompareExtension
+
+string compare the end of the strings and return qtrue if strings match
+============
+*/
+qboolean COM_CompareExtension(const char *in, const char *ext)
+{
+	int inlen, extlen;
+	
+	inlen = strlen(in);
+	extlen = strlen(ext);
+	
+	if(extlen <= inlen)
+	{
+		in += inlen - extlen;
+		
+		if(!Q_stricmp(in, ext))
+			return qtrue;
+	}
+	
+	return qfalse;
+}
 
 /*
 ==================