Partial fix for issue #30.
Move remove_margin_style down a bit. I want to use -ooxml-indentation in fixup_lang_grammar_pre.
Move fixup_remove_margin_style even further down.
Move fixup_remove_margin_style to where I actually want it.
Fix a few more grammar formatting glitches in pursuit of #30. More to come.
Fix bug in find_inline_production_stop_index. Regresses a bit, but that code was clearly nuts.
Support one-line grammar productions. Fixes #30.
Simplify markup on one-line productions. #30.