Backport change from 1.2.0: src/netskel.c: In "Unused fixed point" warning, give file and linenumber where the "*fix" occurred.
git-svn-id: file:///home/survex-svn/survex/branches/1.0@3719 4b37db11-9a0c-4f06-9ece-9ab7cdaee568