glsl: add temporary copy_shader_info() function

This function is added here to ease refactoring towards using the new shared
shader_info. Once refactoring is complete and values are set directly it
will be removed.

We call it from _mesa_copy_linked_program_data() rather than glsl_to_nir()
so that the values will be set for all drivers. In order to do this some
calls need to be moved around so that we make sure to call
do_set_program_inouts() before _mesa_copy_linked_program_data()

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>

src/compiler/shader_info.h

@@ -124,6 +124,13 @@ typedef struct shader_info {
    };
 } shader_info;
 
+struct gl_shader_program;
+struct gl_linked_shader;
+
+void
+copy_shader_info(const struct gl_shader_program *shader_prog,
+                 struct gl_linked_shader *sh);
+
 #ifdef __cplusplus
 }
 #endif