- moved functions to locate errors in input files to class Input
- moved error functions of all parsers to Parser/error.{cc,h}
- sockets complain more silently in case the network is unreachable and this is marked as uncritically
- tidied up lexers: fewer header inclusions and usage of external variables
- added token locations to all lexers and parsers
- tidied up parsers: fewer header inclusions and usage of external variables
- simplified file handling: all parsers now read from netFile (should be renamed)