* TDI-38694:tFileInputExcel -> If Generation mode='Less memory ...' (after
Excel upgrade to 2016), data will read two times
* TDI-38694:Correct the java version
* TDI-38694:Eliminate old simpleexcel.jar.
* TDI-38694:Correct the group ID
* TDI-37924:Upgrade poi.jar to 3.16
* TDI-37924:delete the new jar & change the pom and version.
* TDI-37924: update to download automatically the jar of mail util
tFileOutputExcel appends content to an Excel file containing formula
https://jira.talendforge.org/browse/TDI-30022
Note:1.Update POI
2.Fixed Hex2Dec problem
3.Rebuild sampleexcel.jar