test_advice show OS and filesystem when failed.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47763 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* ext/etc/etc.c (etc_nprocessors): Windows support.
  see [Feature #10267]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47764 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
vm_trace.c (rb_tp_t): pack 56 => 48 bytes on 64-bit

48 bytes is a common malloc size class on x86-64 machines which
require 16-byte alignment.

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* 2014-10-03

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st.c (new_size): use next_pow2 function

Reduces object size slightly on x86-64:

   text	   data	    bss	    dec	    hex	filename
2782359	  22400	  71880	2876639	 2be4df	ruby.orig
2781831	  22400	  71880	2876111	 2be2cf	ruby.pow2

And on 32-bit x86:

   text	   data	    bss	    dec	    hex	filename
2814751	  12100	  30552	2857403	 2b99bb	ruby.orig
2814051	  12100	  30552	2856703	 2b96ff	ruby.pow2

This is not a performance-critical function, but the
smaller icache footprint seems worth it.

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* lib/matrix.rb: Fix Matrix.rows copy bug.
  Patch by Arron Mabrey. [Fix GH-707]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47768 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* lib/matrix.rb: Add hstack & vstack methods.
  Based on a patch by creasywuqiong. [Fix GH-344]

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wip