Add /usr/local/bin/* old cmd patterns to shebangfix

[AMDmi3]

Summary

/usr/local/bin/* shebangs are pretty common (for instance,
/usr/local/bin/python used in python itself), so add them to
shebangfix. This will help to fix python shebangs and better
respect PREFIX in some places.

[rene]

Ah, this is to replace hard-coded "/usr/local" with ${LOCALBASE}

[AMDmi3]

In D10412#216218, @rene wrote:

Ah, this is to replace hard-coded "/usr/local" with ${LOCALBASE}

Not only, also to replace "python" with "python${PYTHON_VER}"