"or" has been deprecated, and the warning about it from ocaml 4.01.x
aborts the build. Use '||' instead. Upstream's "HEAD" equivalent has
the fix already.
Update py-flask-script to 0.6.3.

Version 0.6.3
-----------------

Released on November 11, 2013

- Separate usage into usage/help/description
- Allow for command auto detection
Updated www/py-flask-script to 0.6.3.
Reference the expected class functions, not the members with the same
name.
Remove unused functions.
Fix unnecessary GCCisms.
Don't add -frerun-cse-after-loop. Use do-install to do it properly.
Merge some changes from upstream to build with Sun PRO and libc++,
from rakuco@FreeBSD.org.