build: Default to 64-bit on 32-bit/64-bit userspace.
build: Do not conditionally set variables.

make implementations should be overriding variable values.
This change was made to support ATS build environment, which
fails to override variable values.
build: Bump version for next release.
Merge branch 'master' into port_cpp

Conflicts:
	build/ck.build.in
	build/ck.build.x86_64
Fix array alloc in ck_array and ck_bitmap