Merge remote-tracking branch 'upstream/pull/156'

* upstream/pull/156
  2.3.0 version

 This commit will be the last compatible version with weston 9

 New api's:
     ilm_getDefaultSeat
         get the name of default seat

     ilm_takeAsyncScreenshot
     ilm_takeAsyncSurfaceScreenshot
         both api's provides a way to get the screenshot of the screen or particular surface in asynchronous manner, user will be notified via callback

 Other updates:

 Tran Ba Khang:
     simple-weston-client.c: avoid to use STDOUT_FILENO and STDIN_FILENO
     ivi-controller: set surface background color from client side
     ilm_input_test: update tests with default seat
     ilmInput: support ilm_getDefaultSeat api to return default seat name
     ivi-input-modules: read default seat name from weston.ini file
     tests: add the ilm env checking test
     CMakeLists: update libweston to version 9
     tests: create tests for new screenshot functions with callbacks

 Au Doan Ngoc:
     ivi-controller: update data type of member in struct ivishell
     ivi-controller: Fix the problem of assigning an address to a pointer

 Rajendraprasad K J:
     CMake: Specify generic library destination for installation
     simple-weston-client: Improve signal handling

 Marek Vasut:
     ilmControl: Extend screenshot API with callback support

 Reviewed-by: Tran Ba Khang <[email protected]>

CMakeLists.txt

@@ -25,8 +25,8 @@ project(wayland-ivi-extension)
 
 include(GNUInstallDirs)
 
-SET(IVI_EXTENSION_VERSION 2.2.0)
-SET(ILM_API_VERSION 2.2.0)
+SET(IVI_EXTENSION_VERSION 2.3.0)
+SET(ILM_API_VERSION 2.3.0)
 
 SET( CMAKE_C_FLAGS  "${CMAKE_C_FLAGS} -Wall -Wextra -Wno-unused-parameter" )
 SET( CMAKE_CXX_FLAGS  "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wno-unused-parameter" )