new version of DYT

[dr4kan]

new version of DYT. Details can be found here: https://indico.cern.ch/event/295796/contribution/2/material/slides/0.pdf

The code tuning will be performed after the release of muon APEs and new local errors for DTs.

[slava77]

+1

for #2996 dd87ecd

based on review above,
quick test of 5024d2b (compared to 01422f5 there was a change in DYTthrs: it doesn't introduce adverse changes)
and a confirmation that dd87ecd runs with jenkins.

Just for future ref, some plots made with 5024d2b using 1TeV muon sample, comparing with the baseline:

• better peak in pt
  
• smaller tail in chi2 (all just goes into the core)
  

[dr4kan]

@apfeiffer1, @diguida, @thspeer, @rcastello, @slava77, @ggovi, @Degano

Hi, there are still two pending signatures since many days. As the deadline for pre7 is today can you please take a look at this PR and eventually sign it.
Thanks.

[apfeiffer1]

+1
sorry for the delay - I somehow missed that one.

[rcastello]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next CMSSW_7_1_X IBs unless changes (tests are also fine). @nclopezo, @ktf can you please take care of it?