Fix Text.halign when no layout width is specified.
Fix Text.halign when no layout width is specified.

cledio66/pyglet,kmonsoor/pyglet,gdkar/pyglet,odyaka341/pyglet,Austin503/pyglet,mpasternak/michaldtz-fixes-518-522,gdkar/pyglet,qbektrix/pyglet,mpasternak/michaldtz-fix-552,mpasternak/pyglet-fix-issue-518-522,qbektrix/pyglet,cledio66/pyglet,mpasternak/pyglet-fix-issue-518-522,mpasternak/pyglet-fix-issue-518-522,Austin503/pyglet,qbektrix/pyglet,Austin503/pyglet,Austin503/pyglet,mpasternak/michaldtz-fixes-518-522,shaileshgoogler/pyglet,Austin503/pyglet,google-code-export/pyglet,mpasternak/pyglet-fix-issue-552,gdkar/pyglet,shaileshgoogler/pyglet,cledio66/pyglet,mpasternak/michaldtz-fix-552,shaileshgoogler/pyglet,kmonsoor/pyglet,arifgursel/pyglet,mpasternak/michaldtz-fix-552,odyaka341/pyglet,kmonsoor/pyglet,arifgursel/pyglet,Alwnikrotikz/pyglet,shaileshgoogler/pyglet,mpasternak/michaldtz-fix-552,odyaka341/pyglet,kmonsoor/pyglet,mpasternak/pyglet-fix-issue-552,xshotD/pyglet,gdkar/pyglet,Alwnikrotikz/pyglet,Alwnikrotikz/pyglet,google-code-export/pyglet,xshotD/pyglet,google-code-export/pyglet,mpasternak/michaldtz-fixes-518-522,cledio66/pyglet,odyaka341/pyglet,xshotD/pyglet,mpasternak/pyglet-fix-issue-552,mpasternak/pyglet-fix-issue-518-522,arifgursel/pyglet,shaileshgoogler/pyglet,xshotD/pyglet,xshotD/pyglet,qbektrix/pyglet,odyaka341/pyglet,Alwnikrotikz/pyglet,google-code-export/pyglet,arifgursel/pyglet,mpasternak/michaldtz-fixes-518-522,arifgursel/pyglet,kmonsoor/pyglet,qbektrix/pyglet,gdkar/pyglet,google-code-export/pyglet,cledio66/pyglet,Alwnikrotikz/pyglet,mpasternak/pyglet-fix-issue-552