Preparing for compiling, building and loading 'swt.dll' under OS/2

As of this commit, you need the 'odin32ex' extensions to use this
project. They can be found at: https://github.com/rousseaux/odin32ex

The swt.dll module is the glue between the Java part and the PI, which
is short for 'Platform Implementation'. In other words, it takes 'only'
a functional swt.dll to create an empty SWT Window.

Under OS/2, the Odin32 component provides the Win32 functionality,
and it is there where the shoe wrings at the moment. Header files are
missing, other header files are outdated, and some new modules and/or
stubs may need to be added.

The 'odin32ex' repo provides a temporary sandbox for these Odin32
modifications. Because the swt.dll module can be conditionally compiled
to include or exclude certain Win32 functionality, the 'odin32ex' repo
is used to provide new and/or modified headers and the 'make_odin32.mak'
Makefile is used to tune the Win32 functionality.

This will be the process for upcoming commits:
o Modify 'odin32ex' files
o Push to GitHub
o Modify 'make_odin32.mak' from 'eclipse.platform.swt'
o Try compile and redirect errors to a file
o Push to GitHub

After resolving the header issues, the same process will be done to fix
unresolved externals at link-time. After that, the same will be done for
unresolved externals at load-time/run-time.