TAJO-207: Implement bit_length(string) function. (fixed a missing log in CHANGES.txt)
TAJO-207: Implement bit_length(string) function. (fixed a missing log in CHANGES.txt)

hyunsik/incubator-tajo,gruter/tajo-cdh,yeeunshim/tajo_test,apache/incubator-tajo,yeeunshim/tajo_test,hyunsik/incubator-tajo,yeeunshim/tajo_test,hyunsik/incubator-tajo,gruter/tajo-cdh,apache/incubator-tajo,yeeunshim/tajo_test,hyunsik/incubator-tajo,apache/incubator-tajo,gruter/tajo-cdh,gruter/tajo-cdh,apache/incubator-tajo