- fixed conditional import for pep8 checker
- moved the import to a conditional python 3 import instead of a global
  one, since that seems to be the original intent. Addresses #1900
Manually decref cloned array.
Adding libraries bcm_host and EGL in setup.py to solve issues 2373 and 2364 on rpi running archlinux
Merge branch 'master' of https://github.com/ostralopi-tk/kivy
Adding '/opt/vc/lib' to library_dirs in the proper way for raspberry pi (archlinuxarm)
sdl2: add hooks for pyinstaller
add Window.fullscreen and toggle_fullscreen for sdl2
add borderless property for Window and as a Config option, deprecate fullscreen = 'fake'
make borderless config option and window property work with pygame
remove border debug method
let inspector view the Window object
doc: fixed list numbering, clarified wording in lang.py
doc: changed examples redefining Widget in lang.py
doc: eloborated on ids in lang.py
doc: added dot sytax for ids to lang.py
Merge pull request #2619 from kivy/sdl2_hooks

sdl2: add hooks for pyinstaller
sdl2: add hooks for pyinstaller
sdl2:implement drop_file
pass only the file instead of a tuple