mesa/glsl: Move string_to_uint_map into the util folder

This clears the last bits of the usecases of the hash table
located in mesa/program, allowing us to remove it.

V2: Rebase on top of changes to Makefile.sources

Signed-off-by: Thomas Helland <thomashelland90@gmail.com>
Reviewed-by: Timothy Arceri <timothy.arceri@collabora.com>

src/compiler/glsl/link_uniforms.cpp

@@ -26,8 +26,8 @@
 #include "linker.h"
 #include "ir_uniform.h"
 #include "glsl_symbol_table.h"
-#include "program/hash_table.h"
 #include "program.h"
+#include "util/string_to_uint_map.h"
 
 /**
  * \file link_uniforms.cpp