Suppress any warnings about loslib

This is intended to suppress the following warning:

/.../SimpleITK/Utilities/lua-5.1.5/src/loslib.c:60: warning: the use
of `tmpnam' is dangerous, better use `mkstemp'

The suppression regex is perhaps too general, but begone warning
begone!

Change-Id: I08ddf89b2877ebe0e1343e2ccceeaf77c70c1f6e
Merge topic 'FixSomeWarnings' into next

69cf4f6 Suppress any warnings about loslib