`simul.py` should take default initial timestamp from the input CSV file

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The default start time of the simulation is midnight, January 1, 1970
which is a date we all know and love, but rather useless for cluster
cloudbursting simulations since neither clusters nor clouds existed
for another 25 years.

A much more useful default would be to start the simulation at the
same time the first job in the CSV file is submitted, i.e., take the
time stamp from the first line of the CSV file.

If the user specifies a different initial timestamp via a command-line 
parameter, that would override the timestamp taken from the file.

Original issue reported on code.google.com by riccardo.murri@gmail.com on 16 Feb 2012 at 6:03

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Original comment by riccardo.murri@gmail.com on 17 Feb 2012 at 9:01

• Added labels: Type-Enhancement
• Removed labels: Type-Defect

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If start-time is not specified as command-line argument it is taken from the 
first line of the csv file. 

Original comment by tyanko.a...@gmail.com on 17 Feb 2012 at 3:38

• Changed state: Fixed