* benchmark/bm_vm1_gc_short_lived.rb: added.
  These GC benchmarks do not reflect practical applications.
  They are only for tuning.
* benchmark/bm_vm1_gc_short_with_complex_long.rb: added.
* benchmark/bm_vm1_gc_short_with_long.rb: added.
* benchmark/bm_vm1_gc_short_with_symbol.rb: added.
* benchmark/bm_vm1_gc_wb_ary.rb: added.
* benchmark/bm_vm1_gc_wb_obj.rb: added.
* benchmark/bm_vm_thread_queue.rb: added.
  Thie benchmark is added to know how fast C verion of thread.so.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43547 b2dd03c8-39d4-4d8f-98ff-823fe69b080e