meson/pgo: fix PGO build errors with recent meson(?) versions

The back-reference to 'tokenize.c' in the parent directory causes PGO
build failures, where gcc can't find the PGO data. Likely due to
path/naming issues caused by meson's generated build directories.

meson.build

@@ -252,6 +252,12 @@ pgolib = static_library(
   link_with: vtlib,
 )
 
+tokenize = static_library(
+  'tokenizelib',
+  'tokenize.c',
+  link_with: [common],
+)
+
 if get_option('b_pgo') == 'generate'
   executable(
     'pgo',

tests/meson.build

@@ -1,8 +1,8 @@
 config_test = executable(
   'test-config',
-  'test-config.c', '../tokenize.c',
+  'test-config.c',
   wl_proto_headers,
-  link_with: [common],
+  link_with: [common, tokenize],
   dependencies: [pixman, xkb, fontconfig, wayland_client, fcft, tllist])
 
 test('config', config_test)