remove crud - git.c

Signed-off-by: Philip Oakley <philipoakley@iee.org>
revert bits of 'guides'

Signed-off-by: Philip Oakley <philipoakley@iee.org>
help.c : add list_common_guides_help

Signed-off-by: Philip Oakley <philipoakley@iee.org>
Help: add --guides to usage string

Signed-off-by: Philip Oakley <philipoakley@iee.org>
revert OPTION_BOOLEAN
see if this removes one error
consequential change - common-guides.h

Signed-off-by: Philip Oakley <philipoakley@iee.org>