Workaround a build issue
Implemented gai_strerror()
The tests also depend on "netdb"
Fixed the URL for the online documentation
Added a stub for getnameinfo()
Added missing definition for useconds_t
Added missing definition for struct flock
Code cleanup
Added a test case for fork() in unistd.c
Fixed a couple comments
Improved the tests script
Also testing sleep()
More exhaustive test for sleep()
Fixed the test for nl_langinfo()
Slightly improved the tests
Code cleanup
Fixed the usage screen
Added a test for memchr()
Updated copyright information
The tests also depend on "select"