[birt-dev]CheckIn: Fix Bugzilla Bug 173976 --- [Automation]The result of

["Wei Wang" <wwang@xxxxxxxxxxx>]

Title: [birt-dev]CheckIn: Fix Bugzilla Bug 173976 --- [Automation]The result of DateTimeSpan.years() is wrong

- Summary:
Fix Bugzilla Bug 173976 --- [Automation]The result of DateTimeSpan.years() is wrong

- Bugzilla Bug (s) Resolved:
173976

- Description:
Fix Bugzilla Bug 173976 --- [Automation]The result of DateTimeSpan.years() is wrong

engine will validate the arguments first, if startDate isnot before endDate,
engine will replace the order, and then return a correct result.

- Tests Description  :
Manual Test

- Notes to Build Team:
None

- Notes to Developers:
None

- Notes to QA:  
None

- Notes to Documentation:  
None

- Files Edited:
"/org.eclipse.birt.core/src/org/eclipse/birt/core/script/DateTimeSpan.java"

- Files Added:
None

- Files Deleted
None

- Wei Wang
Actuate Software(Shanghai) Co.,Ltd