macosx/framework: Use syslog facilities.

Sources/VLCLibrary.m

@@ -76,7 +76,9 @@ void __catch_exception( void * e, const char * function, const char * file, int
             [defaultParams addObject:@"--ignore-config"];                           // Don't read and write VLC config files
             [defaultParams addObject:@"--vout=macosx"];
             [defaultParams addObject:@"--text-renderer=quartztext"];                // our CoreText-based renderer
-            [defaultParams addObject:@"--verbose=-1"];                               // Don't polute the log
+            [defaultParams addObject:@"--verbose=-1"];                              // Don't polute the stdio log
+            [defaultParams addObject:@"--syslog"];                                  // log to syslog
+            [defaultParams addObject:@"--log-verbose=4"];                           // log everything
             [defaultParams addObject:@"--no-color"];
             [defaultParams addObject:@"--no-media-library"];
             [defaultParams addObject:@"--play-and-pause"];