tests: use explicit code pages instead of ACP in calls to setlocale setlocale in old CRTs does not support ACP/OCP strings to specify code page in the locale string. This results in test failures. To avoid this, explicitly specify code page in locale strings passed to setlocale. Signed-off-by: Kirill Makurin <maiddaisuki@outlook.com> Signed-off-by: LIU Hao <lh_mouse@126.com>