I've changed the way BOP_* flags are defined (they are now OM_* flags).
Everything is in "opt_str_lit-v2" branch of git://bogomips.org/ruby.git

Full diff of my work-in-progress here against trunk:
	http://80x24.org/spew/m/opt-str-lit-v2%40m.txt

Interesting individual patches:

* Auto enum generation for optimized methods:
  http://bogomips.org/ruby.git/patch?id=220be6849

* Optimized string allocations for gsub/sub/tr/tr_s(!) calls:
  http://bogomips.org/ruby.git/patch?id=bc28526fa

I'll work some cleanups and adding more methods tomorrow:

	* Hash#{has_key,member,key,include}?
	* {Array,Hash,String}#delete
	* Array#include?
	* String#{squeeze,count,delete!}
	* Time#strftime
	  ...

There's a lot of potential, here :)