eventloop: support cancel state in asyncCall
eventloop: support cancel state in asyncCall

Change-Id: I6582a04c0df46c8ad813a704751b04e9f4d7ab0d
Reviewed-on: http://gerrit.aldebaran.lan:8080/15183
Reviewed-by: mnottale <e3ccf1b6558404e921a21fa09cebb1153b50ec36@aldebaran-robotics.com>
Tested-by: cgestes <ddb78fe00abb42f91254c16a0860e38eb0781789@aldebaran-robotics.com>

aldebaran/libqi,bsautron/libqi,vbarbaresi/libqi,aldebaran/libqi,aldebaran/libqi