* insns.def (splatarray): make new array if flag is set.

	* compile.c (iseq_compile_each): make new array with
	  splat. [ruby-core:21901][Feature #1125]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_3@36228 b2dd03c8-39d4-4d8f-98ff-823fe69b080e