Improved CmdLine help message formatting

[ahmadh84]

Before, the -h help flag wrote each option in its own line as follows:

 -opt1    This is my long winded help message which requires more space and makes it ugly [default option for -opt1]
 -myopt2  help for myopt2 [default option for -myopt2]

These messages were extremely hard to read. This commit now breaks each
option help message as follows:

 -opt1    This is my long winded help message
          which requires more space and makes
          it ugly [default option for -opt1]
 -myopt2  help for myopt2 [default option for -myopt2]

This is done in a way to limit the help message to around 80 characters.