Refactor use of basestring to use exec() on attempted assignment of basestring to an internal variable (which we thenuse in a common is_basestring() utility function), to avoid triggering the basestring fixer.
Refactor use of basestring to use exec() on attempted assignment of
basestring to an internal variable (which we thenuse in a common
is_basestring() utility function), to avoid triggering the basestring fixer.

Distrotech/scons,Distrotech/scons,Distrotech/scons,Distrotech/scons,Distrotech/scons