* variable.c (rb_cvar_declare): add frozen class/module check.

* re.c (match_to_a): should propagate taint.

* re.c (rb_reg_s_quote): ditto.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_6@1932 b2dd03c8-39d4-4d8f-98ff-823fe69b080e