waf: upgrade waf, remove msvcfix as it replaced by msvc_pdb

scripts/waifulib/msvcfix.py

@@ -1,10 +0,0 @@
-#!/usr/bin/env
-from waflib.TaskGen import feature, after_method
-
-@feature('c', 'cxx')
-@after_method('apply_flags_msvc')
-def make_pdb_unique(self):
-	for t in self.compiled_tasks:
-		pdb_unique_cflag = '/Fd' + t.outputs[0].change_ext('.pdb').abspath()
-		t.env.append_value('CFLAGS', pdb_unique_cflag)
-		t.env.append_value('CXXFLAGS', pdb_unique_cflag)

wafsrc

@@ -1 +1 @@
-Subproject commit fbee1a19d208af00209b895de811f56e4dfe0da2
+Subproject commit 2931163e56b2dc9e40ad9a4587cd097cff92bd9f