Experimentally revert r38041

"vm_dump.c: no methods in segv handler"
It may cause segv:
http://fb.rubyci.org/~chkbuild/ruby-trunk/log/20121130T090301Z.diff.html.gz

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* ext/dl/win32/extconf.rb: Fix typo
  by Santiago Pastorino <santiago@wyeworks.com>
  https://github.com/ruby/ruby/pull/221 fix GH-221

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test_settracefunc.rb: envutil

* test/ruby/test_settracefunc.rb: EnvUtil is required for
  assert_normal_exit when running solely.

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probes_helper.h: RUBY_DTRACE_HOOK

* probes_helper.h (RUBY_DTRACE_HOOK): surround with do..while.

* vm.c (vm_exec): supply semicolon.

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Revert r38301

"* common.mk ($(MINIPRELUDE_C)): -I may break make dist."

This didn't solve the issue.

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* tool/make-snapshot (BASERUBY): add --disable-gem to avoid load gems.
  [Bug #7541] [ruby-core:50736]

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* ext/pathname/lib/pathname.rb:  Hide private methods from RDoc.


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* lib/rdoc/options.rb:  Added --page-dir option for moving pages in
  doc/ to the top-level.
* lib/rdoc/rdoc.rb:  ditto.
* test/rdoc/test_rdoc_options.rb:  Test for the above.
* test/rdoc/test_rdoc_rdoc.rb:  ditto.


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* common.mk:  Added --pages-dir to rdoc creation.  Now doc/ items show
  up at top-level.
* .document:  Moved doc/* entries to doc/.document
* doc/.document:  ditto


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fix typos for r38298

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* ext/fiddle/function.c (Fiddle::Function.new): new keyword argument :name to set the name attribute.
* ext/fiddle/lib/fiddle/import.rb (import_function, bind_function): set function name by using the :name keyword argument.
  Re-fixes r38243. [ruby-core:50566]
* test/fiddle/test_function.rb (test_name): test for the :name keyword argument and Fiddle::Function#name.


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fix a typo

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* ext/dl/lib/dl/func.rb (DL::Function#unbind, #bound?): suppress NoMethodError when Fiddle is available. [ruby-core:50756] [Bug #7543]
* test/dl/test_func.rb (test_bound*, test_unbind*): tests for the above.


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* 2012-12-12

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* test/dl/test_func.rb (test_name_with_block, test_bind, test_qsort1): call unbind to release the callback closure because maximum number of callbacks is limited to DL::MAX_CALLBACK (== 5) with pure DL without Fiddle.


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* tool/make-snapshot: add --disable-rubygem to both MINIRUBY and RUBY.
  On making miniprelude.c, it seems use MINIRUBY. this fixes #7541
  but rubygems also needs to be fixed for older rubies.

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* eval.c (rb_using_refinement): make the method table of an iclass
  for a refinement that of the refinement, not that of the origin of
  the refinement, which is set by rb_include_class_new().  This
  change is needed to make module prepend into a refinement work
  properly.

* test/ruby/test_refinement.rb: related test.

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Experimentally recommit of r38041: specify smaller max length

* vm_dump.c (rb_vm_bugreport): get rid of calling methods in sigsegv
  handler.  based on a patch by charliesome (Charlie Somerville)
  [ruby-core:49573] [Bug #7402]

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test.rb: show messages in one line

* sample/test.rb (Progress#initialize): add --verbose option and show
  messages in one line unless --verbose is given.


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vm.c: pass exceptions while handling an exception

* vm.c (vm_exec): pass exceptions while handling an exception.
* vm_trace.c (rb_threadptr_exec_event_hooks): propagate exceptions.
  revert r38293 partially.


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