import new build system
add missing objects ot Makefile.in
disable libuv build
add platform-specific mmap wrappers
build platform-specific files
use custom mmap wrapper instead of the APR one
reorder header inclusion order
pull in stddef.h in platform/posix/mmap.c
get rid of old build system
pull out build config data into build/setup.pm
fix backslash substitution
Switch frame ref-count to libatomic_ops.
Switch frame_pool_num to libatomic_ops.
Rename MVM_cas => MVM_trycas.

The traditional cas definition is to return what was seen. We'll make
MVM_cas mean that in the future, so rename the bool-returning one to
MVM_trycas.
Make sure we get null-terminated filename.
Make sure we get null-terminated filename.
Make sure we get null-terminated filename.
put feature detection into build/auto.pm
fix search&replace fail
Fix :dba(...) code generation.