MONDRIAN: Adds another missing folder creation in the prepare target.
MONDRIAN: Adds another missing folder creation in the prepare target.

[git-p4: depot-paths = "//open/mondrian/": change = 14163]

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