mesa: include mtypes.h less

- remove mtypes.h from most header files
- add main/menums.h for often used definitions
- remove main/core.h

v2: fix radv build

Reviewed-by: Brian Paul <brianp@vmware.com>

src/compiler/glsl/linker.h

@@ -25,6 +25,10 @@
 #ifndef GLSL_LINKER_H
 #define GLSL_LINKER_H
 
+struct gl_shader_program;
+struct gl_shader;
+struct gl_linked_shader;
+
 extern bool
 link_function_calls(gl_shader_program *prog, gl_linked_shader *main,
                     gl_shader **shader_list, unsigned num_shaders);