NEWS,src/message.c: Ignore LANG if it starts with a digit to avoid problems with bogus value for LANG which AutoCAD installation seems to set on MS Windows (backported from 1.1.13).
git-svn-id: file:///home/survex-svn/survex/branches/1.0@3461 4b37db11-9a0c-4f06-9ece-9ab7cdaee568