Fix intnat pointer issue in test library.
Generation of 'external' declarations from types.
Add bigarray support for external declarations.
Basic read/write stub generation support.
Record properties of global names.
C stub generation from types (WIP).
Add ctypes.stubs subpackage.
Rudimentary interface for C_stubs.
Basic code printing (WIP).
More work on C stub generation.
Narrow the C_stubs interface.
Add interface for ml_stubs module.
Printer for generated ML stubs.
Generate function for retrieving primitive constructor names.
WIP
Look up the directories for subproject dependencies; don't compute them.
Generate wrapper functions for ml stubs.

Pass projected raw pointers to C.
Simplify the Ml_stubs interface
Omit trivial wrappers during stub generation.
Order names of native/byte functions in external declaration.