pyqt5: fix error on python 3.2 build

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
pyqt5: fix build error on python 2.7

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
speed-up build

Signed-off-by: Hiroshi Miura <miurahr@linux.com>