Add t in dvmp; add a place holder for InvQuant in REC

WIP: Add t in dvmp; add a place holder for InvQuant with limited track selection in REC

benchmarks/dvmp/analysis/dvmp.h

@@ -45,9 +45,9 @@ namespace util {
     return quantities;
   }
 
-  inline double get_nu_simu(inv_quant quantities) { return quantities.nu / 1000.; }
-  inline double get_Q2_simu(inv_quant quantities) { return quantities.Q2; }
-  inline double get_x_simu(inv_quant quantities) { return quantities.x; }
+  inline double get_nu(inv_quant quantities) { return quantities.nu / 1000.; }
+  inline double get_Q2(inv_quant quantities) { return quantities.Q2; }
+  inline double get_x(inv_quant quantities) { return quantities.x; }
   inline double get_t(inv_quant quantities) { return quantities.t; }
 
   // for tracking, add later