Appending the redirect urls stats.

[nishantkshyp2004]

The following changes are done to append the redirect urls stats to the output.

• Added a new -L option analogous to the curl -L option to follow redirects and print the stats.
• Changed the code formatting and created new functions run_command, print_stats and
  run_command_and_print_stats.
• Appended keys http_code and redirect_curl to the curl format.
• Added a while loop to print the stats if follow redirects (-L) option is used.

Sample output:

HTTP/1.1` 302 Found
Cache-Control: private
Content-Type: text/html; charset=UTF-8
Location: http://www.google.co.in/?gfe_rd=cr&ei=CQPyV8-SBuuK8QeBy7LgCg
Content-Length: 261
Date: Mon, 03 Oct 2016 07:04:41 GMT

Body stored in: /tmp/tmpWV9fJm

  DNS Lookup   TCP Connection   Server Processing   Content Transfer
[   0.061ms  |     0.068ms    |      0.076ms      |       0.0ms      ]
             |                |                   |                  |
    namelookup:0.061ms        |                   |                  |
                        connect:0.129ms           |                  |
                                      starttransfer:0.205ms          |
                                                                 total:0.205ms

HTTP/1.0 200 OK
Date: Mon, 03 Oct 2016 07:04:41 GMT
Expires: -1
Cache-Control: private, max-age=0
Content-Type: text/html; charset=ISO-8859-1
P3P: CP="This is not a P3P policy! See https://www.google.com/support/accounts/answer/151657?hl=en for more info."
Server: gws
X-XSS-Protection: 1; mode=block
X-Frame-Options: SAMEORIGIN
Set-Cookie: NID=87=KaRf8ZB11GmdE6rn1GjaGNDxO2qL4KPYZfQbNpgHns9wbhBM-Xw3wwioSN14tf3RdRFEcvFFqZdEsn1M9I_qV6Ds8fF40Z6j5w_gm_Ay7yqRlGwVj2ymZPppIGTw16Rx; expires=Tue, 04-Apr-2017 07:04:41 GMT; path=/; domain=.google.co.in; HttpOnly
Accept-Ranges: none
Vary: Accept-Encoding
X-Cache: MISS from localhost
X-Cache-Lookup: MISS from localhost:8080
Via: 1.0 localhost (squid/3.1.19)
Connection: close

Body stored in: /tmp/tmpWV9fJm

  DNS Lookup   TCP Connection   Server Processing   Content Transfer
[   0.253ms  |     0.045ms    |      0.19ms       |      0.045ms     ]
             |                |                   |                  |
    namelookup:0.253ms        |                   |                  |
                        connect:0.298ms           |                  |
                                      starttransfer:0.488ms          |
                                                                 total:0.533ms