meson: replace libmesa_util with idep_mesautil

This automates the include_directories and dependencies tracking so that
all users of libmesa_util don't need to add them manually.

Next commit will remove the ones that were only added for that reason.

Signed-off-by: Eric Engestrom <eric.engestrom@intel.com>
Acked-by: Eric Anholt <eric@anholt.net>
Tested-by: Vinson Lee <vlee@freedesktop.org>

src/util/tests/string_buffer/meson.build

@@ -23,9 +23,8 @@ test(
   executable(
     'string_buffer_test',
     'string_buffer_test.cpp',
-    dependencies : [dep_thread, dep_dl, idep_gtest],
+    dependencies : [dep_thread, dep_dl, idep_gtest, idep_mesautil],
     include_directories : inc_common,
-    link_with : [libmesa_util],
   ),
   suite : ['util'],
 )