Included APIs:
* alloc.a contains wrappers around memory allocation, stralloc (dynamic strings)
* buffer.a contains buffered I/O
* byte.a contains formatting, scanning and other string routines
* dns.a contains a full blown DNS resolver
* tai.a contains an abstraction for 64-bit system time
* timeout.a contains versions of several socket routines with user specified timeout
* unix.a contains wrappers for socket functions, mkfifo, opendir, wait and an abstraction around errno.
* sig.a contains wrappers for Unix signal functions.