Add OpenRISC/or1k LG_QUANTUM size definition
Update config.{guess,sub} to more recent versions, to add better support to OpenRISC/or1k (among others)
Support DragonFlyBSD

Note that in contrast to FreeBSD, DragonFly does not work
with force_lazy_lock enabled.
Merge pull request #96 from manuelafm/dev

Please add support for OpenRISC/or1k architecture
Remove ${srcroot} from cfghdrs_in, cfgoutputs_in and cfghdrs_tup in configure

On Windows, srcroot may start with "drive:", which confuses autoconf's
AC_CONFIG_* macros. The macros works equally well without ${srcroot},
provided some adjustment to Makefile.in.
Merge pull request #102 from mneumann/dfly

Support DragonFlyBSD
Fix the bug that causes not allocating free run with lowest address.
Reintroduce the comment that was removed in f9ff603.
Merge pull request #103 from wqfish/dev

Fix the bug that causes not allocating free run with lowest address.

This fixes a regression due to f9ff60346d7c25ad653ea062e496a5d0864233b2,
which was never incorporated into a release.
Add atomic operations tests and fix latent bugs.
Fix the cactive statistic.

Fix the cactive statistic to decrease (rather than increase) when active
memory decreases.  This regression was introduced by
aa5113b1fdafd1129c22512837c6c3d66c295fc8 (Refactor overly large/complex
functions) and first released in 3.5.0.
Set VERSION also when the source directory is a git submodule using a ".git" file pointing to the repo. directory.
Merge pull request #105 from psi-mankoski/dev

Set VERSION also when the source directory is a git submodule using a "....
Maintain all the dirty runs in a linked list for each arena
Add dirty page counting for debug
Purge dirty pages from the beginning of the dirty list.
Remove chunks_dirty tree, nruns_avail and nruns_adjac since we no
longer need to maintain the tree for dirty page purging.
arena->npurgatory is no longer needed since we drop arena's lock
after stashing all the purgeable runs.