quota license corrected

[Petr Pisar]

Hello,

while reviewing quota sources, I found the (BSD and GPLv2+) license
declared in RPM package is not sufficient. There are source files with
different licenses making resulting package (BSD and LGPLv2+ and GPLv2
and GPLv2+). Thus some binary files are effectively GPLv2-only in
contrast to previous RPM license tag.

-- Petr