Added Harro's addition to specify precision as :prec in format string


git-svn-id: http://pyrap.googlecode.com/svn/trunk@355 80e5cd9e-5d28-0410-a7fc-3f808f404835
Added support for uInt

git-svn-id: http://pyrap.googlecode.com/svn/trunk@356 80e5cd9e-5d28-0410-a7fc-3f808f404835
Added improvement of Harro for precision

git-svn-id: http://pyrap.googlecode.com/svn/trunk@357 80e5cd9e-5d28-0410-a7fc-3f808f404835