Item12081: Insert a space into the shebang line of all scripts. Improves perlbrew usage.

rewriteshebang.pl and the configure extensions installer both insert a space into the shebang. #! /usr/bin/perl -wT however the scripts we ship do not include the space.

When using rewriteshebang.pl to restore the default /usr/bin/perl it ends up modifying all scripts in the distribution.

Also a couple of scripts were found to have the invalid #!perl line. Since the shell requires an absolute path to the perl executable, this won't work.

Update all scripts to have a consistent #! /usr/bin/perl -wT (or -w as appropriate)

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Also, add a message to the Unit Test report, showing the version of perl used for the tests.

-- GeorgeClark - 25 Sep 2012