TAJO-347: Fix bug when to call function with insensitive function name. (DaeMyung Kang via hyunsik)
TAJO-350: Implement round, floor, ceil. (hyoungjunkim via hyunsik)
TAJO-342: Implement strpos(string, substring) function. (hyoungjunkim via hyunsik)
TAJO-351: TAJO-351: Implement reverse(text). (DaeMyung Kang via hyunsik)
TAJO-349: Implement md5(text). (DaeMyung Kang via hyunsik)
TAJO-346: Implement hex function. (DaeMyung Kang via hyunsik)
TAJO-317: Improve TajoResourceManager to support more elaborate resource management. (Keuntae Park via jihoon)
TAJO-352: Implement right/left(text, size) function. (DaeMyung Kang via hyunsik)
TAJO-357: Fix invalid filename TestMethFunction to TestMathFUnction. (DaeMyung Kang via hyunsik)
TAJO-348: Implement octet_length(text). (DaeMyung Kang via jaehwa)
TAJO-339: Implement sin( x ) - returns the sine of x (x is in radians). (Jae Young Lee via jaehwa)
TAJO-355: Implement repeat(text,int) function. (DaeMyung Kang via jaehwa)
TAJO-284: Add table partitioning entry to Catalog. (jaehwa)
TAJO-358: Implement initcap(string) function. (Seungun Choe via hyunsik)
TAJO-366: Implement trigonometric functions. (Jae Young Lee via jihoon)
Merge branch 'master' of http://git-wip-us.apache.org/repos/asf/incubator-tajo into DAG-execplan