Type: Mark methods static where we can.
Type: Mark methods static where we can.

Change-Id: Ide63e0b6d5246af7e197a0bf03091b36405b6aca

bsautron/libqi,aldebaran/libqi-java,aldebaran/libqi,aldebaran/libqi-java,aldebaran/libqi,aldebaran/libqi,vbarbaresi/libqi,aldebaran/libqi-java