Fix build of monad-native

Moved recursive make into phony target. This is okay because the called
make does not rebuild things. The calling make no longer flails about
when trying to make the three monad-native targets.

scripts/Makefile

@@ -116,9 +116,11 @@ $(LIBPS_BUILD)/Makefile: $(MONAD_NATIVE)/CMakeLists.txt
 	cd $(LIBPS_BUILD) && cmake $(MONAD_NATIVE)
 
 NATIVE_BINARIES=libps.so monad_native host_cmdline
-$(addprefix dotnetlibs/, $(NATIVE_BINARIES)): $(LIBPS_BUILD)/Makefile
+$(addprefix dotnetlibs/, $(NATIVE_BINARIES)): monad-native
+
+monad-native: $(LIBPS_BUILD)/Makefile
 	$(MAKE) -j -C $(LIBPS_BUILD)
-	cp $(addprefix $(LIBPS_BUILD)/, $(notdir $@)) dotnetlibs
+	cp $(addprefix $(LIBPS_BUILD)/, $(NATIVE_BINARIES)) dotnetlibs
 
 # C++ tests for monad-native - results in native-tests.xml
 # see https://github.com/google/googletest
@@ -151,7 +153,7 @@ buildtemp: nuget.exe
 APP_BASE=exec_env/app_base
 
 .PHONY: $(APP_BASE)
-$(APP_BASE): runps.sh $(POWERSHELL_RUN_TARGETS)
+$(APP_BASE): runps.sh $(RUN_TARGETS)
 	rm -rf $@
 	mkdir -p $(APP_BASE)/Modules
 	cp $(ADMIN_GIT_ROOT)/monad/miscfiles/display/*.ps1xml $(APP_BASE)