Add interface to get current controller mode

[snozawa]

AutoBalancer, Stabilizerの現状のモードをserviceポートから得られるようにしました。

よろしくお願いいたします。

[k-okada]

Test FAILed.
Refer to this link for build results: https://jenkins.jsk.imi.i.u-tokyo.ac.jp:8080job/hrpsys-qnx/1674/

Build Log
last 10 lines

[...truncated 1531 lines...]
  cd /tmp;
  echo "* make tarball *";
  tar -czf hrpsys-387-qnx-2014-10-31.tgz ./hrpsys-source-387-2014-10-31/;

scp: /tmp//hrpsys-base-387.zip: No space left on device
Build step 'Execute shell' marked build as failure
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[k-okada]

Test PASSed.
Refer to this link for build results: https://jenkins.jsk.imi.i.u-tokyo.ac.jp:8080job/hrpsys-qnx/1677/