Update cpplint.py to version 0.0.3

Conflicts:
	scripts/cpplint.py
style: Allow implicit constructors if marked
style: Ensure files aren't checked multiple times
style: Fix false positive warnings with Qt signals
More style tweaks
arx-install-data: Fix warnings on FreeBSD

Their printf command doesn't like it if there are more arguments than
format specifiers.
arx-install-data: Always use -f for cp, mv and rm

Some systems enable -i (interactive mode) by default, which breaks our
GUI.
arx-install-data: Don't use mktemp -t

... as it doesn't have the same semantics on *BSD and Linux.

Also, some systems only support the Xes at the end of the template.