Attempts to add command line argument parsing with getopt_long.

[Yetoo1]

This commit attempts to add command line options -a -h -p -r -u and
adds help documentation. This was using getopt_long. The url can be
customized with -r, -a, and -p (address, protocol, and port respectively)
with -u overriding the aformentioned options if submitted alongside and
allowing to specify a url string with appropriate components concatenated
in a single string. The following is the help text and gives more description:
usage: server [-ahpru] [file]
The default generated url is http://0:8080
A url can be customized by providing the address (-a), port (-p), or protocol (-r). A url can be entered in full with the -u option.
-a, --address Specify an address to use in url (default 0)
-h, --help Print this help message
-p, --port Specify a port to use in url (default 8080)
-r, --protocol Specify a protocol to use in url (default http)
-u, --url Specify a url with the following format. (protocol://address:port).
If other options are used with -u, -u will override the other options.

Issues:

1. The protocol on a generated or supplied url gives a Failed to open server:
   Protocol not found and it looks like there is healthy output, but testing
   download looks like the request isn't being registered. I've found that if a
   literal string is substituted for the url string, this issue doesn't happen,
   but if the string is generated or delivered from a char* or const char* the
   error occurrs.
2. Input from redirection and/or pipe may not be correctly handled (it wasn't
   correctly handled in the latest commit in master).

[Yetoo1]

Any help and/or suggestions would be appreciated to resolve both issues with this commit.