Log Message:
Introduce a variable, LIBNBCOMPAT_USE_PIC, which if set to yes before
including inplace.mk causes a PIC version of libnbcompat to be built
alongside the regular static libnbcompat.

This will be used to extend the features framework in two ways:
1) Support linking features into shared modules
2) Ability to cherry-pick individual objects to link from the libnbcompat
   build directory rather than linking the whole archive.