[PyQt] Executable PNG files in PyQt5 tarball

[Dmitry Shachnev]

Hi,

These files in PyQt5 tarballs wrongly have executable bit set:

examples/quick/canvas/contents/images/gloss.png
examples/quick/canvas/contents/images/lineedit.png
examples/quick/canvas/contents/images/quit.png
examples/quick/canvas/contents/images/stripes.png
examples/quick/canvas/contents/images/titlebar.png
examples/quick/canvas/contents/images/toolbutton.png

This makes our (Debian's) package checker warn about that:
http://lintian.debian.org/maintainer/python-modules-team@lists.alioth.debian.org.html#pyqt5_5.1+dfsg-1

--
Dmitry Shachnev