ES 1.0 didn't have glTexParameteri, which is why we sometimes used
glTexParameterf. However, we shouldn't use glTexParameterf because
that's treating integer values as floating point, which is not type
safe. ES 1.1+ and ES 2.x have glTexParameteri, and we don't really care
about supporting ES 1.0 in any case in Qt 5.
Change-Id: I6b586b31ddc418ba319c4cc88f6bb3978fdbd040
Reviewed-by: Kim M. Kalland <kim.kalland@nokia.com>