[birt-dev] Checkin: resolve image URI relative to BIRT resource folder.

["Yuejie Chen" <yuejie.chen@xxxxxxxxxxx>]

- Summary: resolve image URI relative to BIRT resource folder.

- Bugzilla Bug (s) Resolved:
None
- Description:
Image URI is relative to BIRT resource folder defined in preference.
Resolve this relative issue in desinger.

- Tests Description:
Manual test.
- Notes to Build Team:

- Notes to Developers:

- Notes to QA:

- Notes to Documentation:

- Files Edited:

/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/core/CorePlugin.java
/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/core/model/schematic/ImageHandleAdapter.java
/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/ReportPlugin.java
/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/dialogs/ImageBuilder.java

- Files Added:

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