* parse.y (cond0): no special treatment of string literal in
condition.
* math.c: add acos, asin, atan, conh, sinh, tanh and hypot to Math.
* configure.in: check hypot availablility.
* missing/hypot.c: public domain rewrite of hypot.
* parse.y (warn_unless_e_option): warning condition was wrong.
* parse.y (warning_unless_e_option): ditto.
* enum.c (enum_all): new method 'all?', which returns true if
block returns true for all elements.
* enum.c (enum_any): new method 'any?', which returns true if
block retruns true for any of elements.
* marshal.c (marshal_load): do not give warning unless explicitly
set to verbose.
* eval.c (rb_exit): give string value "exit" to SystemExit.
* ruby.c (proc_options): -v should not print version if
proc_options called via moreswitches().
* parse.y (stmt): while/until modifier must work for empty body.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@1241 b2dd03c8-39d4-4d8f-98ff-823fe69b080e