sharutils license corrected

[Petr Pisar]

I corrected sharutils' license tag from:

GPLv3+ and (LGPLv3+ or BSD) and LGPLv2+ and Public Domain and GFDL

to:

GPLv3+ and (GPLv3+ and BSD) and (LGPLv3+ or BSD) and LGPLv2+ and Public Domain and GFDL

-- Petr