map table for equivalence tests and error handling
put map table as a global variable
finished SEXP template for nomxpw_yesKL
finished abcCalibrate_tau_nomxpw_yesKL

added also new macro for warning and error using the function provided
by Rinternal
general SEXP function abcCalibrate_minimize_KL

this function dispatch to approriate calibration C function with
appropriate equivalence test
added a map on calibration name
finished C implementation of nabc.calibrate.m.and.tau.yesmxpw.yesKL
added minimization over integer

homogeneised R and C code
optimized minimization over integer

save one for loop