Compact crashfixes; Allocstats now runs as long as possible.
oom instead of reserve for freeblock_shrink, more debugging, code cleanup.
Minor cleanup.
JEFF: Max RAM over time traded for slower malloc
Better randomized handle kill at rewind.
Remove unused shadowed.
Make now produces two rmmalloc binaries, one w/ compact, one w/o.
stray (broken) block assert left in DEBUG mode.
Introduced killpercent. Faster rmalloc()-compact (JEFF_MAX_RAM_VS_SLOWER_MALLOC 0) broken atm.
Clear fresh headers.
Cleanup.
Packed headers (doesn't seem to make a difference)
Makefile 'polishing'

Builds plot_rmalloc, plot_rmalloc_compacting, plot_rmalloc_compacting_maxmem
Import jemalloc from https://github.com/emeryberger/Malloc-Implementations at 17e52035d91f9f2e52e3303c8872ee29f5b5a7c5
jemalloc plotter.
Use fixed random seed.
Only rewind for killpercent > 0; more verbosity.
Add gperftools-2.1