Source tree contains executable scripts without executable bits

[glaubitz]

When building fs-uae-launcher for openSUSE, rpmlint complained about missing executable bits for the following scripts which have a shebang:

[  126s] fs-uae-launcher.noarch: W: non-executable-script /usr/share/fs-uae-launcher/OpenGL/arrays/_buffers.py 644 /usr/bin/env python
[  126s] fs-uae-launcher.noarch: W: non-executable-script /usr/share/fs-uae-launcher/OpenGL/arrays/buffers.py 644 /usr/bin/env python
[  126s] fs-uae-launcher.noarch: W: non-executable-script /usr/share/fs-uae-launcher/amitools/tools/geotool.py 644 /usr/bin/env python2.7
[  126s] fs-uae-launcher.noarch: W: non-executable-script /usr/share/fs-uae-launcher/amitools/tools/rdbtool.py 644 /usr/bin/env python2.7
[  126s] fs-uae-launcher.noarch: W: non-executable-script /usr/share/fs-uae-launcher/amitools/tools/xdfscan.py 644 /usr/bin/env python2.7
[  126s] fs-uae-launcher.noarch: W: non-executable-script /usr/share/fs-uae-launcher/amitools/tools/xdftool.py 644 /usr/bin/env python2.7
[  126s] fs-uae-launcher.noarch: W: non-executable-script /usr/share/fs-uae-launcher/amitools/util/BlkDevTools.py 644 /usr/bin/env python2.7
[  126s] fs-uae-launcher.noarch: W: non-executable-script /usr/share/fs-uae-launcher/arcade/res/update.py 644 /usr/bin/env python3
[  126s] fs-uae-launcher.noarch: W: non-executable-script /usr/share/fs-uae-launcher/fsgs/amiga/adf.py 644 /usr/bin/env python3
[  126s] fs-uae-launcher.noarch: W: non-executable-script /usr/share/fs-uae-launcher/fstd/adffile.py 644 /usr/bin/env python3
[  126s] fs-uae-launcher.noarch: W: non-executable-script /usr/share/fs-uae-launcher/launcher/apps/__init__.py 644 /usr/bin/env python3
[  126s] fs-uae-launcher.noarch: W: non-executable-script /usr/share/fs-uae-launcher/oyoyo/examplebot.py 644 /usr/bin/python