QPalette: add member-swap

Implemented as in other shared classes (e.g. QPen), except that
I wrapped the bitfield in a union to speed up swapping.
(GCC didn't manage to optimize (hand-rolled) swaps of adjacent
bit field elements into an integer one, even at -O2).
GCC -pedantic complains about anonymous structs, so I had to
give the struct in the union a name.

Change-Id: I519e1c2f88f6ae2dffed38b493991189d67073b8
Reviewed-by: Girish Ramakrishnan <girish.1.ramakrishnan@nokia.com>
Reviewed-by: Gunnar Sletta <gunnar.sletta@nokia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

0 files changed, 0 insertions, 0 deletions