missed a ssize_t->YARP_SSIZE_T in public API [thanks Ugo Pattacini]
replaced ssize_t with YARP_SSIZE_T
raw ssize_t usage now needs yarp/os/PlatformSize.h
add missing disableCallback in test, see issue #39
Fixing FindGTK2.cmake for Visual Studio 11 - patch to be checked and submitted upstream
Declare float constants as float

Should fix some warnings on windows
Merge branch 'master' into yarp-2.4