message: make echo nicer at the end of the build target
diff: @@ -155,12 +155,12 @@ build-mpi: $(MPI_TARGETS)
  build: bin/stanc$(EXE) bin/stansummary$(EXE) bin/print$(EXE) bin/diagnose$(EXE) $(LIBSUNDIALS) $(MPI_TARGETS) $(TBB_TARGETS) $(CMDSTAN_MAIN_O)
  @echo ''
  ifeq ($(OS),Windows_NT)
  - echo 'NOTE: Please add $(TBB_BIN_ABSOLUTE_PATH) to your PATH variable.'
  - echo 'You may call'
  - echo ''
  - echo 'mingw32-make install-tbb'
  - echo ''
  - echo 'to automatically update your user configuration.'
  + @echo 'NOTE: Please add $(TBB_BIN_ABSOLUTE_PATH) to your PATH variable.'
  + @echo 'You may call'
  + @echo ''
  + @echo 'mingw32-make install-tbb'
  + @echo ''
  + @echo 'to automatically update your user configuration.'
  endif
  @echo '--- CmdStan v$(CMDSTAN_VERSION) built ---'
  