Colin Putney uploaded a new version of Kernel to project The Trunk:
http://source.squeak.org/trunk/Kernel-cwp.714.mcz

==================== Summary ====================

Name: Kernel-cwp.714
Author: cwp
Time: 25 October 2012, 12:16:19.282 pm
UUID: fd5a8602-5b4f-46d0-86ee-c89e91f2e20f
Ancestors: Kernel-eem.713, Kernel-cwp.709

Merge in cwp.709: Remove support for per-class settings of #allowUnderscoreSelectors.

=============== Diff against Kernel-eem.713 ===============

Item was removed:
- ----- Method: Behavior>>allowUnderscoreSelectors (in category 'compiling') -----
- allowUnderscoreSelectors
- 	"Return true if the receiver and its subclasses should be allowed to use underscore in selectors. Returning nil here means that the compiler should use the system-wide default preference. Also see #allowUnderscoreAssignments.
- 
- 	Combinations: If both preferences are false, underscore is illegal. If both preferences are true, underscore assignment needs the be surrounded by spaces and a single underscore cannot be used as selector."
- 	^nil!