[ruby-cvs:64378] usa:r57212 (ruby_2_2): merge revision(s) 56905: [Backport #12983]

[usa at ruby-lang.org]

usa	2016-12-27 19:30:35 +0900 (Tue, 27 Dec 2016)

  New Revision: 57212

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=57212

  Log:
    merge revision(s) 56905: [Backport #12983]
    
    Reverse compatibility_version and current_version for Darwin
    
    The `compatibility_version` should have an API version and the
    `current_version` should have a program version of Ruby, but they have
    been reversed and the binary compatibility has never worked.

  Modified directories:
    branches/ruby_2_2/
  Modified files:
    branches/ruby_2_2/ChangeLog
    branches/ruby_2_2/configure.in
    branches/ruby_2_2/version.h