Merge pull request #1 from millpoo/master

Fix IpUtilTest
add test case for DateUtil.MM()
add case for JsonUtil.toJson(), remove warnings
add TestCase for common.basic.utils.Grep
add test for c'tor of Grep
move package private class to inner class
ParseHex add
Merge remote-tracking branch 'origin/master'

Conflicts:
	java-common-basic/src/test/java/common/basic/utils/GrepTest.java
ParseHex