Updated ABI_VERSION.
Switched PKG_BUILD_PARALLEL on as there seems to be no issue anymore.
I can't find any information about why it was turned off.
Fixed license information.
Signed-off-by: Rosen Penev <rosenp@gmail.com>
compiler warns that exit() isn't defined so checks for build system
compiler fail.
include <stdlib.h> to define exit()
Tested under macos Catalina & Big Sur
Signed-off-by: Kevin Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk>
