support single line commands

[GoogleCodeExporter]

Currently a command with arguments has to be broken up into several
properties, one for the command and one for each argument.

It would be great if you could write commands in one property, including
arguments, just the way you would write on the command line.

The main issue is that the Java classes that start processes accept only
arrays of Strings. The complete command would have to be parsed first.
Parsing is not trivial, spaces must be escaped, either individually (using
a backslash for example) and using double quote to enclose whole strings.
This escaping should be shell agnostic, even if it resembles bash escaping
for example.

Original issue reported on code.google.com by [email protected] on 12 Mar 2009 at 1:08