makefile: files in constants/ dont all end in 'constants' anymore

any non-constants asm files shouldn't be in constants/ anyway
dump event flag constants from haxwiki

most of these need to be renamed before doing anything with them
clean up event flag constants

could probably be shorter, but they should still fit in a single line
first round of event flag constants in map events

this is a little over half.. 610 to go
Merge pull request #189 from yenatch/haxwiki-event-flags

dump haxwiki event flag constants and use them in map events