Enforce all the source files to be encoded in UTF-8.

third_party/mesa/MesaLib/src/mesa/drivers/dri/mach64/mach64_dd.c

Index: third_party/mesa/MesaLib/src/mesa/drivers/dri/mach64/mach64_dd.c
diff --git a/third_party/mesa/MesaLib/src/mesa/drivers/dri/mach64/mach64_dd.c b/third_party/mesa/MesaLib/src/mesa/drivers/dri/mach64/mach64_dd.c
index ca713e2de5eef75fac458e9333af0afdd21fe38c..aad4b969ecceb3767e970f867cd80493c3a6aa9f 100644
--- a/third_party/mesa/MesaLib/src/mesa/drivers/dri/mach64/mach64_dd.c
+++ b/third_party/mesa/MesaLib/src/mesa/drivers/dri/mach64/mach64_dd.c
@@ -26,7 +26,7 @@
  * Authors:
  *	Gareth Hughes <gareth@valinux.com>
  *	Leif Delgass <ldelgass@retinalburn.net>
- *	José Fonseca <j_r_fonseca@yahoo.co.uk>
+ *	José Fonseca <j_r_fonseca@yahoo.co.uk>
  */
 
 #include "mach64_context.h"
@@ -66,7 +66,7 @@ static const GLubyte *mach64DDGetString( GLcontext *ctx, GLenum name )
 
    switch ( name ) {
    case GL_VENDOR:
-      return (GLubyte*)"Gareth Hughes, Leif Delgass, José Fonseca";
+      return (GLubyte*)"Gareth Hughes, Leif Delgass, José Fonseca";
 
    case GL_RENDERER: