Summarize and test NMsim configuration

Usage

NMsimTestConf(
  path.nonmem,
  dir.psn,
  method.execute,
  must.work = FALSE,
  system.type
)

path.nonmem: See ?NMsim
dir.psn: See ?NMsim
method.execute: See ?NMsim
must.work: Throw an error if the configuration does not seem to match system.
system.type: See ?NMsim