cgc-tools/rmshm.rb for removing shared memory segments
changing unprocessed flag to shared memory so to communicate w/o signal handler
no longer using signal_sigchild
Merge pull request #2 from dcompiler/master

no signal handler version
minor change to force a revision
Changes to tester. Pass it the full path to miniruby to test now.
Merge pull request #3 from dcompiler/master

completed the last checkin
fixes to reap collector children correctly
making sure no collection happens before the earlier one has been processed
Merge pull request #4 from dcompiler/master

sigchild fixes
Minimize/fix function declarations
Remove unused mark_current_freelist function
Give SHARED_LIST_SIZE a CGC_ prefix
Stop using printf in signal handler

1) Too verbose for GC heavy tests
2) Occasional deadlock on OS X
Change metor benchmarks to silence warning

ruby 2.0 warns about using class variables from top level.  Change
them to be globals.
Track GC runs for GC.stat