The pch generation depends on the dicts, libs is an approximation.
Speling. Fatal.
Re-apply 4a1fb9e: empty -D_LIBCPP_EXTERN_TEMPLATE against libc++..
Adapt to first,last from current SetRange(); fixes AliROOT.

(cherry picked from commit d2b569f314cb96943705f212cad8a4f7ac659aff)
Use names that do not conflict with clib on MacOS 10.9.
Ldap #defined Debug.