Add Module#const_set
Replace comparison with str.is{upper,digit}
Move consts' names checking logic to ObjectSpace
Constants's names can contain chars with code points > 127
The rest of the Array constructors.
Clean up Array#initialize().
Array.initialize can be called on existing objects.
Rewrite Array#initialize in Ruby.
Merge pull request #435 from jerith/jerith/array-new

The rest of the Array constructors.
style fixes
Merge pull request #433 from jstepien/module-const-set

Add Module#const_set
some style fixes
style fixes for ruby code
Fixed #393 -- mark this state in the lexer correctly