Fix spelling error s/SORT_OREDER/SORT_ORDER/ in "content --help"

Change-Id: I8f869c9d2243ae8ff414399b7d6835c7ca74d500
Signed-off-by: Martin Olsson <martin@minimum.se>
Properly rotate full [-pi, +pi] orientation range if available

The code currently in place assumes that orientation has a range
of [-pi/2, +pi/2] as may be found with a touch digitizer. However,
when used with a digitzer that can report the full [-pi, +pi] range
of orientations (e.g. a stylus) the calculations here are incorrect.

This patch checks if the post-rotation value is out of range for
the axis, and wraps it back around.

Change-Id: I03a22f7bf9526a5d995df1a18430d6dd24c6d6ee
Bug fix for building the hover target list

lastHoverTarget should be updated even though lastHoverTarget is not null.
If not, the hover target list cannot have more than one hover target.

Change-Id: I21b49e8cbf3657321b2f1f2c20a3bdeb7f07bd48
Signed-off-by: Sangkyu Lee <sk82.lee@lge.com>
Add additional Method that check whether a table is empty or not

Application Devleopers are using queryNumEntries API
implemented by "COUNT(*)" to check whether a table is empty or not.
COUNT(*)  has to process the entire table to compute the result.
But, "EXISTS" can stop after a single matching row has been found.
So, Using "EXISTS" is more faster than "COUNT(*)"
I added new API using "EXISTS" to check whether a table is empty or not

Change-Id: Idcc2633d0a5349c59f41e125cf34c9dc6622cdbe