Add duk_fb_put_funcptr()
Dprint native __func, eliminate FIXME
Cast trivia
Merge branch 'fix-dprint-funcptr'

Remove one FIXME related to debug printing __func (function pointer) of
a native function.
Add missing defines to API docs
Merge branch 'fix-apidoc-misc-defines'

Fix a few missing API defines in the API docs.
Rename duk_api.c to duk_api_stack.c

It contains value stack resizing, pushing and popping values,
getters, type checking, etc.  All of these are related to basic
stack manipulation.
Makefile and dist fix for duk_api.c rename
Relocate API heap functions, comment cleanup
Add new duk_api_heap.c to makefile and dist
Trailing whitespace fix
Merge branch 'api-file-cleanups'

Move heap-related functions from duk_api.c to a separate duk_api_heap.c
and rename duk_api.c to duk_api_stack.c.
Ditz issue update