[CMAKE]
- Remove unnecessary allow_warnings throughout the code base
- Make -Wnarrowing an error unless excepted specifically (only done in explorer)

git-svn-id: svn://svn.reactos.org/reactos/trunk/reactos@62566 97493ccd-5924-5043-b1f5-66cb403b36ce
[COMCTL32][RAPPS]
- Mark Str* functions as private in comctl32, they should be imported from shlwapi instead
- Remove the associated hack in rapps
CORE-7786 #resolve

git-svn-id: svn://svn.reactos.org/reactos/trunk/reactos@62570 97493ccd-5924-5043-b1f5-66cb403b36ce