Merge pull request #34 from sguan-actuate/master

fix bug 451629 and created unit test for cancel status to output error
Clear row limit before executing cube query in designer.
Always use combo box as query defnition input field in chart builder,
and disable DnD to input query under Mac system.
Code refactor to use single engine task to execute query in chart
builder live preview
Fixed an error in string comparison.
Bugzilla#454310 
Added support of auto resize to fit container after creating chart.
Extra transaction "Resize Chart" will be seen when undo.

The new chart's width is the container's width, and the height is
max(default height, min(container height, container width / 2).
Code refactor
Fixed NPE
Check data reference first before checking data set or cube.
raise the ceiling on the one plugin that claims it won't accept 4.5
fix up a few stragglers from bad merge 0418057
Merge remote-tracking branch 'origin/Luna'
bug 443526: don't package provisional data engine api javadoc
Update map file for birt repository by auto tag script
Update map file for birt repository by auto tag script
Update map file for birt repository by auto tag script
Update map file for birt repository by auto tag script
Update map file for birt repository by auto tag script
Update map file for birt repository by auto tag script
Update map file for birt repository by auto tag script