Homebrew/homebrew — pull request #26469 by chrmoritz (2014-02-06 14:44:35+00:00)
Title: sip fix HEAD

This fixes 2 problems when building sip with `--HEAD`:
* if build with both python versions, creating the symlink will fail on the 2nd run (already exist)
* build.py doesn't run under python3:
```
==> python3 build.py prepare
Traceback (most recent call last):
File "build.py", line 618, in
action_names = [action.func_name[1:] for action in actions]
File "build.py", line 618, in
action_names = [action.func_name[1:] for action in actions]
AttributeError: 'function' object has no attribute 'func_name'
```