Adding enforcement of the wanted graphics system GL/GLES
- GRAPHICS=GL/GLES
fixes for tito for pep8 and using one variable
Update dictadapter.py

A fix for the issue described at #1972
Allow setting source to empty string to clear text, if it wasnt empty before.
Allow loading from file ref, even if source has not been used before. Setting source to '' wont clear text now.
Make audio test use nose assertion instead of just assert for more debug info.
Replace the test audio ogg file with mp3 to hopefully fix nose tests.
Revert "Replace the test audio ogg file with mp3 to hopefully fix nose tests."

This reverts commit eb2068d45cd6059a0007e244c329678a9f5d3153.
uix:ScreenManager fix #2057
gstplayer: fix query of the duration when audio is not prerolled (not in playing or paused state)^C
Merge branch 'master' of ssh://github.com/kivy/kivy
gstplayer: remove get_double, and force waiting for the state.
Merge pull request #1989 from matham/rst

Allow reloading rst files and allow source to be ''
Merge pull request #1899 from thopiekar/master

Adding enforcement of the wanted graphics system GL/GLES
setup: fix compilation
dictstore: add backward compatibility for the first argument.
vertex/line: fix compilation warning.
kivy: remove unused import
add info for gentoo installation
fix carousel bug with load_next, make _start_animation interface more flexible