Add dirty page tracking for pages within active small/medium object runs.

Reduce chunks_dirty red-black tree operations via lazy updating.

Remove the default definition for SIZEOF_INT_2POW.

Add the 'G'/'g' and 'H'/'h' MALLOC_OPTIONS flags.

Add the malloc_tcache_flush() function.

Disable thread-specific caching until the application goes multi-threaded.

Add the 'M' and 'm' MALLOC_OPTIONS flags, which control the maximum medium size
class.

Relax the cap on small/medium run size to arena_maxclass.

Reduce arena_run_reg_dalloc() integer division code complexity.

Increase the default chunk size from 1MiB to 4MiB.

and heap allocation are always enabled.

Rename jemalloc_options-->malloc_options and jemalloc_message-->malloc_message.

encode bin indices in [0..255].

Submitted by:	Ingvar Hagelund

Fix some style nits.

Ignore the jemalloc/bin directory.

implementation, calls free() after calling TSD destructors.  This was causing a
crash during thread exit, since the magazine rack was no longer valid for the
thread.  Fix this by using a special mag_rack value to indicate that
deallocation should bypass the magazine machinery.

initializtion.

Add configure test for __asm__ syntax.

Add configure test for __attribute__ syntax.

Reported by:	Mark Rabkin

jemalloc is configured.

Modify arena_malloc() API to avoid unnecessary choose_arena() calls.  Remove
unnecessary code from choose_arena().

Enable lazy-lock by default, now that choose_arena() is both faster and out of
the critical path.

Implement objdir support in the build system.

Implement minimal Makefile.

Make compile-time-optional jemalloc features controllable via configure
options (debug, stats, tiny, mag, balance, dss).

Conditionally exclude most of the opt_* run-time options, based on configure
options (fill, xmalloc, sysv).

Implement optional --enable-dynamic-page-shift.

Implement optional --enable-lazy-lock.

Re-order malloc_init_hard() and use the malloc_initializer variable to support
recursive allocation in malloc_ncpus().

Add mag_rack_tsd in order to receive notifications of thread termination.

Add jemalloc.h.