o RooFFTConvPdf

    - Support numeric convolution is smaller range than observable domain,
      specificied by range of "cache" binning

  o RooHistPdf

    - Return zero if pdf observable is outside of range of histogram observable


git-svn-id: https://root.cern.ch/svn/root/branches/v5-34-00-patches@48314 27541ba8-7e3a-0410-8455-c3a389f83636
Fix for multiple Exec() invocation, that was broken when using unique
tmp file names.


git-svn-id: https://root.cern.ch/svn/root/branches/v5-34-00-patches@48315 27541ba8-7e3a-0410-8455-c3a389f83636