Bugzilla#420472: Change the extension name of the exported xls file from

xls_spudsoft format to ".xls".


Signed-off-by: cchao <cchen@actuate.com>

viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/viewer.properties

@@ -25,6 +25,7 @@ viewer.extension.odp=odp
 viewer.extension.docx=docx
 viewer.extension.pptx=pptx
 viewer.extension.xlsx=xlsx
+viewer.extension.xls_spudsoft=xls
 
 # [OUTPUT FORMAT LABEL NAME]
 viewer.label.html=HTML
@@ -39,6 +40,7 @@ viewer.label.odp=OpenDocument Presentation
 viewer.label.docx=DOCX
 viewer.label.pptx=PPTX
 viewer.label.xlsx=XLSX
+viewer.label.xls_spudsoft=Spudsoft Excel
 
 # [CSV SEPARATOR]
 viewer.sep.0=,