For more infomation about this bug, visit <https://www.fmtc.be/bugzilla/orocos/show_bug.cgi?id=476>

           Summary: replace/add funcInternal by funcHook
           Product: BFL
           Version: trunk
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: core
        AssignedTo: bfl [..] 
        ReportedBy: klaas gadeyne [..] 
                CC: bfl [..] 
   Estimated Hours: 0.0

To lower the code-readability-threshold of orocos-subprojects it would be nice
if BFL would use the same conventions as the RTT in terms of function naming.
Hence I suggest to replace the funcInternal() functions by a funcHook()
equivalent and add some Hook() extensions to other non-public class methods to
stress the fact they are not part of the public API of BFL classes.

e.g.

- replace UpdateInternal with UpdateHook for most filter classes
- add Hook() extensions to the SysUpdate() and MeasUpdate() functions of

KalmanFilter classes