Remove duplicate function. FileStateToChar is defined and used in files_lib.c
Kill global VINPUTFILE, with fire

Leaving global MINUSF intact for now, may need to be wrapped up in some
context object.
Merge pull request #298 from sigurdteigen/cleanup/remove-vinputfile

Kill global VINPUTFILE, with fire
Merge branch 'master' of git://github.com/cfengine/core