Version 0.2.21 * Add many more socket related constants * Fix i686 and aarch64 android * Add many more termios related constants/functions * Add ppoll * Add readdir for more platforms * Add jail functions/constants for FreeBSD * Add pthread_exit * Add EPOLLEXCLUSIVE * Add WIFCONTINUED * Add MSG_PEEK * Fix a number of issues on Solaris * Add wcstombs * Add O_TMPFILE * Add pipe2 to more platforms