Initialize GL2ES1 or GL2ES2 depending on JoglApplicationConfiguration.

This change enable OpenGL ES 1 and ES 2 gdx-test-jogl code and demo games to work on ARM GNU/Linux systems.

Tested on Broadcom VC IV Rasberry Pi and Tegra 2 Toshiba AC100.

Signed-off-by: Xerxes Rånby <xerxes@zafena.se>