[ruby-cvs:65635] shyouhei:r58463 (trunk): revert newhash refactoring

[shyouhei at ruby-lang.org]

shyouhei	2017-04-24 10:40:51 +0900 (Mon, 24 Apr 2017)

  New Revision: 58463

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=58463

  Log:
    revert newhash refactoring
    
    We need to fix GC bug before merging this.  Revert revisions
    58452, 58435, 58434, 58428, 58427 in this order.

  Modified files:
    trunk/hash.c
    trunk/insns.def
    trunk/internal.h
    trunk/vm.c