message: fixing AMGX directory name
diff: @@ -374,7 +374,7 @@ UMPIRE_OPT = -I$(UMPIRE_DIR)/include
  UMPIRE_LIB = -L$(UMPIRE_DIR)/lib -lumpire
  # AMGX library configuration
  -AMGX_DIR = @MFEM_DIR@/../amgx
  +AMGX_DIR = @MFEM_DIR@/../AMGX
  AMGX_OPT = -I$(AMGX_DIR)/include
  AMGX_LIB = -L$(CUDA_HOME)/lib64 -lcusparse -lcusolver -lcublas -lnvToolsExt -L$(AMGX_DIR)/lib -lamgx -Xlinker=-rpath=$(CUDA_HOME)/lib64
  