build: fix race in 'make deploy' for windows

The binary builds can clobber eachother, so use a single subdir dependency
instead.

Makefile.am

@@ -46,7 +46,7 @@ distcheck-hook:
 distcleancheck:
 	@:
 
-$(BITCOIN_WIN_INSTALLER): $(BITCOIND_BIN) $(BITCOIN_QT_BIN) $(BITCOIN_CLI_BIN)
+$(BITCOIN_WIN_INSTALLER): all-recursive
 	$(MKDIR_P) $(top_builddir)/release
 	STRIPPROG="$(STRIP)" $(INSTALL_STRIP_PROGRAM) $(BITCOIND_BIN) $(top_builddir)/release
 	STRIPPROG="$(STRIP)" $(INSTALL_STRIP_PROGRAM) $(BITCOIN_QT_BIN) $(top_builddir)/release