which executes "command" in the shell and returns the output in the TString.
Multi-line output is separated by \n's.
Add proper support for Microsoft Visual C++ 9.0
Add support for 'unix' socket on Windows.
New method Clear() to reset the string but not to resize it to the default
(small) size. Useful when the string was pre-allocated to a large size and
has to be re-used.
Insure that ROOT's autoloader is always enabled whenever loading rootmap files.