Set language_version to 130 (the max currently supported) when reading IR.

This is necessary so _mesa_glsl_initialize_types can create appropriate
glsl_types and add them to the symbol table.

In the future, we'll want to set it to the max GLSL version supported by
the current driver.

glsl_parser_extras.cpp

@@ -761,6 +761,11 @@ main(int argc, char **argv)
 
       _mesa_ast_to_hir(&instructions, &state);
    } else {
+      /* FINISHME: We should initialize this to the max GLSL version supported
+       * FINISHME: by the driver.  At the moment, we don't know what that is.
+       */
+      state.language_version = 130;
+
       _mesa_glsl_read_ir(&state, &instructions, shader);
    }