I have a (large) patch that completely eliminates the need for ld_so_aix and makeexp_aix.  I've applied and been using this with for Python 2.7 and 3.5+, but I still need to go back and validate the tests to ensure everything passes as expected.

It's still a work in progress, but the patch can be found at https://github.com/ericvw/cpython/commit/e889f5fd04c1b73ef06e9f6e60108b2a7718b7d6.

If this is out of context for this particular issue, I'm happy to raise a new issue to have a focus discussion about potentially landing this.  Ignore changes for README.AIX since I am addressing that in issue28845.

I believe if we can eliminate the wrapper scripts, it will simplify the build and linking for AIX for the interpreter and C-extension modules.