handle the case of getting list as res_xml

Author: rambo

pythonforandroid/bootstraps/common/build/build.py

@@ -911,6 +911,9 @@ def _read_configuration():
     if args.permissions and isinstance(args.permissions[0], list):
         args.permissions = [p for perm in args.permissions for p in perm]
 
+    if args.res_xmls and isinstance(args.res_xmls[0], list):
+        args.res_xmls = [x for res in args.res_xmls for x in res]
+
     if args.try_system_python_compile:
         # Hardcoding python2.7 is okay for now, as python3 skips the
         # compilation anyway