Lots of cleanup things.

Lots of cleanup things.

Added the bitmaps back, and added the wizard style program group
selection dialog.

Got rid of references to backup etc. inserted by the installer wizard
-- we don't use these.

Got rid of conditionals for Windows 3.1, ditto.

Changed version to 1.6a2.

Changed default install directory to "C:\Python16" (not really, but close).

Install only one copy of python16.lib.

Install the two MS DLLs (versioned) and python16.dll (unversioned) in
the system directory.

Install Tcl/Tk and expat in the DLLs directory.