Doc: Fix glitches in doxygen config/macros.

Change-Id: Ie04cc68ba207d9ff6cde03e214d629b62a856971
Reviewed-on: http://gerrit.aldebaran.lan/26559
Reviewed-by: mnottale <mnottale@aldebaran-robotics.com>
Tested-by: mnottale <mnottale@aldebaran-robotics.com>
Promise: Basic doxydoc to mitigate that weird feeling of emptyness.

Change-Id: I36bfee7feaf537771f6857bdd26dc84ec062ae8b
Reviewed-on: http://gerrit.aldebaran.lan/26621
Reviewed-by: mnottale <mnottale@aldebaran-robotics.com>
Tested-by: mnottale <mnottale@aldebaran-robotics.com>
Fix API typo: isCanceleable->isCancelable.

Change-Id: I1dd431fac91cbb2e8358b981d775107398fa3aad
Reviewed-on: http://gerrit.aldebaran.lan/26620
Tested-by: gerrit
Reviewed-by: mnottale <mnottale@aldebaran-robotics.com>
Tested-by: mnottale <mnottale@aldebaran-robotics.com>
Log: be thread-safe.

Change-Id: Ie562681bc12320153ba4dd644cad20049fbaf6e5
Reviewed-on: http://gerrit.aldebaran.lan/26549
Tested-by: gerrit
Reviewed-by: mnottale <mnottale@aldebaran-robotics.com>
Tested-by: mnottale <mnottale@aldebaran-robotics.com>