Tests: add missing Makefile to Amber QM/MM.

test/library/qmmm_amber/fortran_stub/Makefile

+FC=gfortran
+FFLAGS=-std=f2003
+LDFLAGS=-L../../../../sPuReMD/lib/.libs -lspuremd
+PROGRAM=driver
+DEPS=$(patsubst %.F03, %.o, $(wildcard *.F03))
+
+ifeq ($(V),1)
+ECHO := 
+else
+ECHO := @
+endif
+
+all: $(PROGRAM)
+
+$(PROGRAM): $(DEPS)
+	$(ECHO)$(FC) $(FFLAGS) $(LDFLAGS) -o $@ $^
+
+%.o: %.F03
+	$(ECHO)$(FC) $(FFLAGS) -c -o $@ $<
+
+clean:
+	$(ECHO)rm -f $(PROGRAM) $(DEPS) *.mod
+
+debug:
+	@echo "PROGRAM = $(PROGRAM)"
+	@echo "DEPS = $(DEPS)"
+	@echo "RC = $(FC)"
+	@echo "FFLAGS = $(FFLAGS)"
+	@echo "LDFLAGS = $(LDFLAGS)"
+
+.PHONY: all clean