[birt-dev] CheckIn:Revise the build script about the plugin path.

["Xuelan Li" <xuelan.li@xxxxxxxxxxx>]

Summary:

Revise the build script about the plugin path.
- Bugzilla Bug (s) Resolved:

- Description:

- Tests Description:

 Manual test
- Notes to Build Team: None

- Notes to Developers: None

- Notes to QA: None

- Notes to Documentation: None

- Files Added:

- Files Edited:

 

    Checking in customBuildCallbacks.xml;