Backport a patch to fix the build with -std=gnu++14.
clang 6.0 defaults to -std=gnu++14 instead of -std=gnu++98. This backport fixes
the following error:
/wrkdirs/usr/ports/devel/py-krosspython/work/kross-interpreters-4.14.3/python/cxx/Objects.hxx:1081:15: error: cannot initialize a member subobject of type 'int' with an rvalue of type 'nullptr_t'
, offset( NULL )
^ ~~~~PR: 224945