Implement timeout for method calls

:Release Notes:
A call may be bound, and canceled automatically if LSReply() isn't
called after given time.

:Detailed Notes:
Implement new function LSCallSetTimeout(), which arms a timer. Each
LSReply() resets the timer, and timeout cancels the call.

:Testing Performed:
Automatic test suite.

:QA Notes:

:Issues Addressed:
[BHV-7] LS2: Implement timeout for method calls

Open-webOS-DCO-1.0-Signed-off-by: Anatolii Sakhnik <anatolii.sakhnik@lge.com>

Change-Id: I2736998b3461dd642bc2bc5eb2b3b15c9e60e305
Reviewed-on: https://g2g.palm.com/4730
Reviewed-by: DCO Verification
Reviewed-by: Anatolii Sakhnik <anatolii.sakhnik@lge.com>
Tested-by: Anatolii Sakhnik <anatolii.sakhnik@lge.com>
Reviewed-by: Nikolay Orliuk <nikolay.orliuk@lge.com>