internal_mem: make Duplicate use an inline definition of cc_strdup
internal_mem: make Duplicate use an inline definition of cc_strdup

This again helps with using custom allocators like jemalloc.

Signed-off-by: Steven Noonan <4068f0880b399410602d694b3cc711c8a8f4727e@uplinklabs.net>

tycho/crisscross,tycho/crisscross,tycho/crisscross