Import SDL 1.2.14 and GLEW 1.5.4.

I am not replacing the following header files used by the Windows build,
as I don't have a Windows build setup to test. Please point the Windows
build at the header files inside these clean distribution packages and
garbage collect the duplicates: GLew/*.h and SDL/Include_1.2.


git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@5711 8ced0084-cf51-0410-be5f-012b33b47a6e

Externals/SDL/docs/man3/SDL_CreateMutex.3

@@ -0,0 +1,43 @@
+.TH "SDL_CreateMutex" "3" "Tue 11 Sep 2001, 23:00" "SDL" "SDL API Reference" 
+.SH "NAME"
+SDL_CreateMutex \- Create a mutex
+.SH "SYNOPSIS"
+.PP
+\fB#include "SDL\&.h"
+#include "SDL_thread\&.h"
+.sp
+\fBSDL_mutex *\fBSDL_CreateMutex\fP\fR(\fBvoid\fR);
+.SH "DESCRIPTION"
+.PP
+Create a new, unlocked mutex\&.
+.SH "EXAMPLES"
+.PP
+.nf
+\f(CWSDL_mutex *mut;
+
+mut=SDL_CreateMutex();
+\&.
+\&.
+if(SDL_mutexP(mut)==-1){
+  fprintf(stderr, "Couldn\&'t lock mutex
+");
+  exit(-1);
+}
+\&.
+/* Do stuff while mutex is locked */
+\&.
+\&.
+if(SDL_mutexV(mut)==-1){
+  fprintf(stderr, "Couldn\&'t unlock mutex
+");
+  exit(-1);
+}
+
+SDL_DestroyMutex(mut);
+\fR
+.fi
+.PP
+.SH "SEE ALSO"
+.PP
+\fI\fBSDL_mutexP\fP\fR, \fI\fBSDL_mutexV\fP\fR, \fI\fBSDL_DestroyMutex\fP\fR
+.\" created by instant / docbook-to-man, Tue 11 Sep 2001, 23:00