multilepton builder (vlisovsk MR 4)

Builder for (very) rare decays with 4+ leptons in the final state.

Important: Relies on Phys!895 (merged)

updated log:

StrippingReport                                                INFO Event 100000, Good event 100000
 |                                              *Decision name*|*Rate,%*|*Accepted*| *Mult*|*ms/evt*|
 |_StrippingGlobal_                                            |  2.1140|      2114|       |  62.194|
 |_StrippingSequenceStreamLeptonic_                            |  2.0450|      2045|       |  43.458|
 |!StrippingMultiLepton_B24muXLine                             |  0.3010|       301| 41.708|  35.477|
 |!StrippingMultiLepton_B24muXUpLine                           |  0.1170|       117| 15.846|   0.653|
 |!StrippingMultiLepton_Jpsi22Mu2EPromptLine                   |  0.4310|       431|  1.617|   0.682|
 |!StrippingMultiLepton_Jpsi23MuEDetachedLine                  |  0.2860|       286|  1.769|   1.570|
 |!StrippingMultiLepton_Jpsi23MuEPromptLine                    |  0.2400|       240|  1.754|   0.157|
 |!StrippingMultiLepton_Jpsi2Mu3EDetachedLine                  |  0.3970|       397|  2.531|   1.965|
 |!StrippingMultiLepton_Jpsi2Mu3EPromptLine                    |  0.4610|       461| 13.382|   0.254|
 |!StrippingMultiLepton_InclDet4muLowMassLine                  |  0.2650|       265|  3.030|   0.486|
 |!StrippingMultiLepton_InclDet4muLowMassUpLine                |  0.2000|       200|  1.790|   0.338|
 |!StrippingMultiLepton_Jpsi24MuPromptLine                     |  0.0870|        87|  2.333|   0.058|
 |!StrippingMultiLepton_B24muXLine_TIMING                      |  0.3000|       300| 41.847|   0.083|
 |!StrippingMultiLepton_B24muXUpLine_TIMING                    |  0.1170|       117| 15.846|   0.031|
 |!StrippingMultiLepton_Jpsi22Mu2EPromptLine_TIMING            |  0.4310|       431|  1.617|   0.030|
 |!StrippingMultiLepton_Jpsi23MuEDetachedLine_TIMING           |  0.2860|       286|  1.769|   0.092|
 |!StrippingMultiLepton_Jpsi23MuEPromptLine_TIMING             |  0.2400|       240|  1.754|   0.063|
 |!StrippingMultiLepton_Jpsi2Mu3EDetachedLine_TIMING           |  0.3970|       397|  2.531|   0.068|
 |!StrippingMultiLepton_Jpsi2Mu3EPromptLine_TIMING             |  0.4610|       461| 13.382|   0.085|
 |!StrippingMultiLepton_InclDet4muLowMassLine_TIMING           |  0.2650|       265|  3.030|   0.373|
 |!StrippingMultiLepton_InclDet4muLowMassUpLine_TIMING         |  0.2000|       200|  1.790|   0.269|
 |!StrippingMultiLepton_Jpsi24MuPromptLine_TIMING              |  0.0870|        87|  2.333|   0.026|
 |_StrippingSequenceStreamDimuon_                              |  0.1830|       183|       |  18.725|
 |!StrippingMultiLepton_B24muXTightLine                        |  0.0090|         9| 10.778|   0.087|
 |!StrippingMultiLepton_B22mu2eXTightLine                      |  0.0180|        18|  5.111|   3.093|
 |!StrippingMultiLepton_InclDet4muLine                         |  0.0340|        34|  1.412|   0.075|
 |!StrippingMultiLepton_InclDet2mu2muLine                      |  0.0140|        14|  1.429|   0.113|
 |!StrippingMultiLepton_InclDet6muLine                         |  0.0260|        26| 10.346|  12.681|
 |!StrippingMultiLepton_InclDet5muLine                         |  0.0140|        14|  1.786|   0.069|
 |!StrippingMultiLepton_InclPrompt6muLine                      |  0.0110|        11|  2.909|   0.069|
 |!StrippingMultiLepton_Incl8muLine                            |  0.0030|         3| 49.333|   1.202|
 |!StrippingMultiLepton_Incl8mu4bodyLine                       |  0.0000|         0|  0.000|   0.092|
 |!StrippingMultiLepton_InclDet6mu3bodyLine                    |  0.0000|         0|  0.000|   0.165|
 |!StrippingMultiLepton_Jpsi24MuPromptTightLine                |  0.0340|        34|  2.735|   0.028|
 |!StrippingMultiLepton_Jpsi22Mu2EDetachedLine                 |  0.0160|        16|  1.188|   0.075|
 |!StrippingMultiLepton_Jpsi22E2EDetachedLine                  |  0.0340|        34|  1.235|   0.044|
 |!StrippingMultiLepton_Jpsi22Mu2ESSDetachedLine               |  0.0310|        31|  1.290|   0.074|
 |!StrippingMultiLepton_B24muXTightLine_TIMING                 |  0.0090|         9| 10.778|   0.028|
 |!StrippingMultiLepton_B22mu2eXTightLine_TIMING               |  0.0180|        18|  5.111|   0.024|
 |!StrippingMultiLepton_InclDet4muLine_TIMING                  |  0.0340|        34|  1.412|   0.068|
 |!StrippingMultiLepton_InclDet2mu2muLine_TIMING               |  0.0140|        14|  1.429|   0.105|
 |!StrippingMultiLepton_InclDet6muLine_TIMING                  |  0.0260|        26| 10.346|   0.026|
 |!StrippingMultiLepton_InclDet5muLine_TIMING                  |  0.0140|        14|  1.786|   0.052|
 |!StrippingMultiLepton_InclPrompt6muLine_TIMING               |  0.0110|        11|  2.909|   0.022|
 |!StrippingMultiLepton_Incl8muLine_TIMING                     |  0.0030|         3| 49.333|   0.023|
 |!StrippingMultiLepton_Incl8mu4bodyLine_TIMING                |  0.0000|         0|  0.000|   0.029|
 |!StrippingMultiLepton_InclDet6mu3bodyLine_TIMING             |  0.0000|         0|  0.000|   0.152|
 |!StrippingMultiLepton_Jpsi24MuPromptTightLine_TIMING         |  0.0340|        34|  2.735|   0.025|
 |!StrippingMultiLepton_Jpsi22Mu2EDetachedLine_TIMING          |  0.0160|        16|  1.188|   0.069|
 |!StrippingMultiLepton_Jpsi22E2EDetachedLine_TIMING           |  0.0340|        34|  1.235|   0.046|
 |!StrippingMultiLepton_Jpsi22Mu2ESSDetachedLine_TIMING        |  0.0310|        31|  1.290|   0.055|

@iwilliam @sferrere