Installing PYO and PYC does not work so disable this. Move the
Python check to the top level and have a single place.
Fix the install paths a revert the 'from . import' changes. This
is resolved by installing into the correct paths.
This is a first pass at cleaning up the support. To use:
$ waf configure --prefix=$HOME/development/rtems/4.11
$ waf build install
Start GDB and break at Init:
(gdb) py import rtems
(gdb) rtems task
will list the classic API tasks.