Use lazy evaluation for suite host and global config imports.

And don't abort if site or user config files not found (just carry on
with the global defaults).
adapt view command...
Pared down file inclusion functions.
tidy...
Tidied dict handling...
bug fix...
Config.py bug fix.
Added a parsec README file.
Fix print_cfg ordering.
graph merge warnings only in verbose mode.
un-many runtime defaults.
Handle __MANY__ section properly.
working on gcylc.rc parsing...
gcylc config working now...
gcylc option to print config.
Moved prnt_cfg into parsec...
added high level parsec module.
Moved configspec files...
parsec test code...
moree...