Behavior specs cleanup: Reorder toplevel |describe| blocks
Behavior specs cleanup: Reorder toplevel |describe| blocks

Reorder toplevel |describe| blocks to more closely match ordering used
in the PEG.js grammar and elsewhere in PEG.js.

luisvt/pegjs,mcanthony/pegjs,Mingun/pegjs,GerHobbelt/pegjs,luisvt/pegjs,jlturner/pegjs,Sciumo/pegjs,Sciumo/pegjs,mcanthony/pegjs,jlturner/pegjs,pegjs/pegjs,GerHobbelt/pegjs,pegjs/pegjs,Mingun/pegjs