Lazreport, cairo exporter: implements barcodes

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41009 4005530d-fff6-0310-9dd1-cebe43e6787f
LazReport, editor sample, modified barcodetester report to include barcores at 0,90,180 and 270 degrees

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41010 4005530d-fff6-0310-9dd1-cebe43e6787f
LazReport, cairo export, cleanup

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@41011 4005530d-fff6-0310-9dd1-cebe43e6787f