MONDRIAN: Add user-defined aggregate functions to the roadmap.
MONDRIAN: Add user-defined aggregate functions to the roadmap.

[git-p4: depot-paths = "//open/mondrian/": change = 4248]

truvenganong/mondrian,citycloud-bigdata/mondrian,preisanalytics/mondrian,stiberger/mondrian,wetet2/mondrian,OSBI/mondrian,bmorrise/mondrian,mustangore/mondrian,openedbox/mondrian,cesarmarinhorj/mondrian,openedbox/mondrian,bmorrise/mondrian,bmorrise/mondrian,pentaho/mondrian,nextelBIS/mondrian,julianhyde/mondrian,mdamour1976/mondrian,syncron/mondrian,sayanh/mondrian,citycloud-bigdata/mondrian,pedrofvteixeira/mondrian,pedrofvteixeira/mondrian,dkincade/mondrian,mustangore/mondrian,dkincade/mondrian,ivanpogodin/mondrian,rfellows/mondrian,AvinashPD/mondrian,lgrill-pentaho/mondrian,cesarmarinhorj/mondrian,nextelBIS/mondrian,ivanpogodin/mondrian,wetet2/mondrian,cocosli/mondrian,pentaho/mondrian,Seiferxx/mondrian,syncron/mondrian,nextelBIS/mondrian,citycloud-bigdata/mondrian,wetet2/mondrian,pedrofvteixeira/mondrian,stiberger/mondrian,syncron/mondrian,mdamour1976/mondrian,sayanh/mondrian,OSBI/mondrian,Seiferxx/mondrian,cocosli/mondrian,julianhyde/mondrian,OSBI/mondrian,cocosli/mondrian,lgrill-pentaho/mondrian,lgrill-pentaho/mondrian,openedbox/mondrian,AvinashPD/mondrian,mdamour1976/mondrian,cesarmarinhorj/mondrian,sayanh/mondrian,preisanalytics/mondrian,ivanpogodin/mondrian,pentaho/mondrian,AvinashPD/mondrian,preisanalytics/mondrian,dkincade/mondrian,stiberger/mondrian,Seiferxx/mondrian,truvenganong/mondrian,truvenganong/mondrian,rfellows/mondrian,mustangore/mondrian