intern.h: move rb_ary_cat from internal.h

* include/ruby/intern.h (rb_ary_cat): move from internal.h, since it
  is described in README.EXT.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43015 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* 2013-09-23

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43016 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
tracepoint.c: wrap data in a struct

* ext/-test-/tracepoint/tracepoint.c (struct tracepoint_track): wrap
  tracepoint tracking data in a struct to be placed on the stack.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43017 b2dd03c8-39d4-4d8f-98ff-823fe69b080e