Re-introduce python profile.d scripts

This reverts commits:
commit f380d4bc8fa60892a6ea3edf49a7d413c3153bcb
commit 495c7b919307e3c70e8dc1fc50a6a8c38189b195

    Don't need to make this directory

    /etc/profile.d scripts are not needed with environment modules

Without this profile script building of python roll failed because
the module opt-python is not loaded when the 'make roll' is run.

Moreover in rocks
/opt/python/bin/python
always worked just worked and not if you don't do module load
opt-python it doesn't work. Let's try to be backward compatible.
Added MANPATH to opt-python modulefile

Python man(1) pages are installed at /opt/python/share/man and
differ from the OS installed man pages installed at /usr/share/man.

Adding the MANPATH directive to the modulefile prepends and removes
the /opt/python/share/man when the module is loaded and unloaded.
Bumped opt-python-modules version.
Added opt-python-modules to manifest
Merge pull request #6 from tcooper/MODULES_MANPATH

Added MANPATH to opt-python modulefile
nobinary: remove big binaries from git repo
add sphinx and its prereqs