miscellaneous patches and stuff

• ruby performance tests -- The tests I used in quantifying ruby performance, not at all generalized, so some work will be required to adapt them to a different environment.
• emacs_22_1_leopard.patch -- Patch to get emacs-22.1 building on leopard. Republished from YAMAMOTO Mitsuharu's email.
• ruby_1.8_heap_info.patch -- Adds GC.heap_info function to ruby 1.8.6 to get a view of GC behavior.
• ruby_1.9_heap_info.patch -- Adds GC.heap_info function to ruby 1.9 trunk (04/28/2008) to get a view of GC behavior.
• performance of ruby 1.8.6 vs 1.9 -- A table comparing results of running the GC benchmarks used here to compare 1.8.6 and 1.9.
• performance of patched ruby 1.8.6 vs 1.9 -- A comparison of 1.8 with the "less memory" patch applied vs 1.9.