CCmain.c 
========
This module only comes into play under C++. It is a main program that
simply calls wish's main renamed as C_main. 

C_main is created by compiling tkMain.c using a C compiler with the
additional option -Dmain=C_main, and storing the object as tkC_Main.o
in ../lib. That has to be done separately by you.

How tkMain.o is built depends on how Tk was built on your system.
Ideally it needs to be carried out in Tk's build directory. tkmkmf is
not usable with C++ until this has been done. The installation does
not do anything about tkMain.c.

tkAppInit.c
===========
This is Tk's tkAppInit.c modified with a call to AppInit in the
initialisation section. It is compiled with a C compiler.

AppInit.c 
========= 
This is a minimal coding of AppInit, i.e. it does nothing It is
provided so that the user does not have to supply an AppInit routine
if there is no initialisation to be done. It is compiled with C and is
stored as the library ../lib/AppInit.a so that it can be linked if the
user has not supplied their own.

Makefile 
======== 
This Makefile builds and installs the files described above in ../lib.
Remember, it does not do anything about tkMain.c.
