Move c/h files implementing/defining standard library stuff into a new libc directory, also standard'ify some parts of the code base (almost entirely #include fixes).

This is to a) to cleanup firmware/common and firmware/include a bit, but also b) for Rockbox as an application which should use the host system's c library and headers, separating makes it easy to exclude our files from the build.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@25850 a1c6a512-1295-4272-9138-f99709370657

apps/plugins/midi/midiplay.c

@@ -450,6 +450,8 @@ static int midimain(const void * filename)
 enum plugin_status plugin_start(const void* parameter)
 {
     int retval;
+    PLUGINLIB_EXIT_INIT;
+
     PLUGIN_IRAM_INIT(rb)
 
     if (parameter == NULL)