dix: fix redundant redeclaration warnings in dixfont

These functions are already declared in <X11/fonts/fontproto.h>.
Redeclaring them just for _X_EXPORT causes tons of warnings throughout
xserver, but they need to be declared somewhere to be picked up by
sdksyms.sh.  Doing so in a private header limits the warnings to
sdksyms.c; fixing those as well would require changes to fontsproto.

Signed-off-by: Yaakov Selkowitz <yselkowitz@users.sourceforge.net>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>

dix/dixfonts.c

@@ -1823,12 +1823,14 @@ InitFonts(void)
     register_fpe_functions();
 }
 
+_X_EXPORT
 int
 GetDefaultPointSize(void)
 {
     return 120;
 }
 
+_X_EXPORT
 FontResolutionPtr
 GetClientResolutions(int *num)
 {
@@ -1861,6 +1863,7 @@ GetClientResolutions(int *num)
  * should be called (only once!) by each type of fpe when initialized
  */
 
+_X_EXPORT
 int
 RegisterFPEFunctions(NameCheckFunc name_func,
                      InitFpeFunc init_func,
@@ -1932,24 +1935,28 @@ find_old_font(XID id)
     return (FontPtr) pFont;
 }
 
+_X_EXPORT
 Font
 GetNewFontClientID(void)
 {
     return FakeClientID(0);
 }
 
+_X_EXPORT
 int
 StoreFontClientFont(FontPtr pfont, Font id)
 {
     return AddResource(id, RT_NONE, (pointer) pfont);
 }
 
+_X_EXPORT
 void
 DeleteFontClientID(Font id)
 {
     FreeResource(id, RT_NONE);
 }
 
+_X_EXPORT
 int
 client_auth_generation(ClientPtr client)
 {
@@ -1959,6 +1966,7 @@ client_auth_generation(ClientPtr client)
 static int fs_handlers_installed = 0;
 static unsigned int last_server_gen;
 
+_X_EXPORT
 int
 init_fs_handlers(FontPathElementPtr fpe, BlockHandlerProcPtr block_handler)
 {
@@ -1977,6 +1985,7 @@ init_fs_handlers(FontPathElementPtr fpe, BlockHandlerProcPtr block_handler)
     return Successful;
 }
 
+_X_EXPORT
 void
 remove_fs_handlers(FontPathElementPtr fpe, BlockHandlerProcPtr block_handler,
                    Bool all)