* Add several #includes of standard headers in platform.h.
* #undef X_OK in platform.h. It's defined in the standard <access.h>,
but also used in the local "kermit.h" for a differentpurpose.
* Declare {struct k_data}.dbf as a function returning void, not int,
to match the way it's used.
http://www.kermitproject.org/ftp/kermit/archives/ek17.tar
EK (Embedded Kermit, E-Kermit) is an implementation of the Kermit file
transfer protocol written in ANSI C and designed for embedding in
devices or firmware, use in realtime applications, or for construction
of DLLs and libraries. A sample calling environment and i/o support are
provided for Unix.
