std::strlen requires cstring include to build

Or, even simpler, don't bother with the needless namespacing.

Change-Id: I4bbb115c1c2c89881a0bf88ccd54b0f5cb8b3518
ignore large twips values like MSO does (cp#1000043)

Change-Id: Ib304245b6ae64c15cfb6c999580f73e5e228c440
test for ignoring large twips values (cp#1000043)

Change-Id: I366539b83c7a93a81fd72f3f2355b09c59f7ae58