ANDROID: added variant of orte_config.h which provides configuration for android...

ANDROID: added variant of orte_config.h which provides configuration for android build.

The file orte_config_android.h provides Android contents of
orte_config.h used by Martin Vajnar <martin.vajnar@gmail.com>
during ORTE Android support development which was introduced
by his patches

  ORTE: Android hack - define HAVE_CONFIG_H

  ANDROID: allow compilation from command line add new orte_config.h
     This allows compilation of native code with ndk-build and
     of Java part with ant.

Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>