Merge branch 'js/mingw-use-utf8'

Windows update.

* js/mingw-use-utf8:
mingw: fix possible buffer overrun when calling `GetUserNameW()`
mingw: use Unicode functions explicitly
mingw: get pw_name in UTF-8 format

diff --cc compat/mingw.c
Simple merge

diff --cc compat/poll/poll.c
index 8b07edb0feca434cce2ff7766c30d7529febf996,8f24b802521e982bd9be6502854689bcd84906f4..0e95dd493c949122b22036bf5d205c413d4a0421
--- 1/compat/poll/poll.c
--- 2/compat/poll/poll.c
+++ b/compat/poll/poll.c
@@@ -149,8 -149,8 +149,8 @@@ win32_compute_revents (HANDLE h, int *p
      case FILE_TYPE_PIPE:
        if (!once_only)
        {
 -        NtQueryInformationFile = (PNtQueryInformationFile)
 +        NtQueryInformationFile = (PNtQueryInformationFile)(void (*)(void))
-           GetProcAddress (GetModuleHandle ("ntdll.dll"),
+           GetProcAddress (GetModuleHandleW (L"ntdll.dll"),
                            "NtQueryInformationFile");
          once_only = TRUE;
        }

diff --cc compat/winansi.c
Simple merge