[python-bindings] Added support for getting a module's functions, iterating f/b over said functions, dumping/print name of functions.

Tests are included as well.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190471 91177308-0d34-0410-b5e6-96231b3b80d8
Remove trailing whitespace

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@190472 91177308-0d34-0410-b5e6-96231b3b80d8