rtt_rosclock: added cleanup function to terminate SimClockThread when the application quits

If the SimClockThread is not destroyed by the StartStopManager before the Logger is finally destroyed in __os_exit(),
RTT will restart the Logger due to log output in the RTT::os::Thread::~Thread() destructor and overwrite the orocos.log file.
rtt_rosclock: fixed header installation directory
doc: update readme instructions for ros.find

Signed-off-by: Peter Soetens <peter@thesourceworks.com>
Merge remote-tracking branch 'jhu-lcsr-forks/hydro-devel' into hydro-devel

Conflicts:
	rtt_rosclock/src/rtt_rosclock.cpp
rtt_dynamic_reconfigure: implemented dynamic_reconfigure server service
rtt_dynamic_reconfigure: added advertise() and shutdown() operations and not advertise immediately
rtt_dynamic_reconfigure_tests: added unit tests for rtt_dynamic_reconfigure
rtt_dynamic_reconfigure: use a special DataSource implementation for AutoConfig
rtt_dynamic_reconfigure_tests: updated AutoConfig test
rtt_dynamic_reconfigure: added shared_ptr typedef in class Server<ConfigType>
rtt_dynamic_reconfigure: fixed stupid shared_ptr error in class AutoConfig and invalid reference in AutoConfig::buildGroupDescription()
rtt_tf: removed authority setting from header callerid of tf messages for ROS indigo and upwards (workaround for #24)
rtt_dynamic_reconfigure: added pointer to a specific instance of the Updater class to allow the parent TaskContext to implement it directly

Signed-off-by: Johannes Meyer <johannes@intermodalics.eu>
rtt_dynamic_reconfigure_tests: fixed compile error due to update in rtt_dynamic_reconfigure
rtt_dynamic_reconfigure: added Doxygen documentation
rtt_dynamic_reconfigure: updated README.md
rtt_dynamic_reconfigure_tests: removed group in Test.cfg as rqt_reconfigure currently does not support groups
rtt_dynamic_reconfigure: make updating properties thread-safe by adding updateProperties() and notfiyPropertiesUpdate() OperationCallers
rtt_dynamic_reconfigure: updated README.md
rtt_dynamic_reconfigure: forward level to update and notification callbacks