Get rid of libfetch and proplib external dependencies.

The list of required external deps is now confuse, libarchive and openssl.

libxbps now includes a wrapper for proplib prefixed with xbps_ rather than prop_.

include/Makefile

@@ -8,8 +8,11 @@ all:
 
 .PHONY: install
 install:
-	install -d $(DESTDIR)$(INCLUDEDIR)
+	install -d $(DESTDIR)$(INCLUDEDIR)/xbps
 	install -m 644 $(INCS) $(DESTDIR)$(INCLUDEDIR)
+	for f in array bool data dictionary number object string; do \
+		install -m 644 xbps/xbps_$${f}.h $(DESTDIR)$(INCLUDEDIR)/xbps; \
+	done
 
 .PHONY: uninstall
 uninstall: