ifchange: --keep option

* tool/ifchange (--keep=suffix): new option for debug.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40755 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
configure.in: escape

* configure.in (unexpand_shvar): escape $.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40756 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
loadpath.c: split

* loadpath.c: split load path staffs from version.c.
* dmyloadpath.c: miniruby has no builtin load paths, so verconf.h is
  not needed.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40757 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
configure.in: shvar_to_cpp in ruby

* configure.in: save configured load path values into verconf.in.
* common.mk (verconf.h): create from verconf.in with shvar_to_cpp.rb.
* tool/shvar_to_cpp.rb: turn shell variables into C macros.
  [Bug #7959]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40758 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
vm_eval.c: suppress warning

* vm_eval.c (eval_string_with_cref): narrow a variable scope into the
  EXEC_TAG block to suppress -Wclobberd warning.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40759 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
vm.c: suppress warnings

* vm.c (vm_invoke_proc, vm_exec), vm_eval.c (rb_eval_cmd): add
  volatile to suppress -Wclobbered warnings by gcc 4.9.0.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40760 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* gc.c: add an additional RGENGC_PROFILE mode (2).
  Profiling result can be check by GC.stat.
* gc.c (type_name): separate from obj_type_name().



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40761 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
* common.mk (verconf.h): fix dependency.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@40762 b2dd03c8-39d4-4d8f-98ff-823fe69b080e