Evil: really drop Windows XP support

Summary: set WINVER macro to at least Vista macro value

Test Plan: compilation

Reviewers: cedric

Subscribers: jpeg

Differential Revision: https://phab.enlightenment.org/D5369

m4/evil_windows.m4

@@ -31,11 +31,11 @@ AC_MSG_RESULT([${_winver}])
 
 case "${_winver}" in
   vista)
-     EFL_WINDOWS_VERSION_CFLAGS="-D_WIN32_WINNT=0x0600"
+     EFL_WINDOWS_VERSION_CFLAGS="-D_WIN32_WINNT=0x0600 -DWINVER=0x0600"
      _efl_windows_version="Windows Vista"
      ;;
   win7)
-     EFL_WINDOWS_VERSION_CFLAGS="-D_WIN32_WINNT=0x0601"
+     EFL_WINDOWS_VERSION_CFLAGS="-D_WIN32_WINNT=0x0601 -DWINVER=0x0601"
      _efl_windows_version="Windows 7"
      ;;
   *)

src/lib/evil/evil_util.c

@@ -90,9 +90,7 @@ evil_utf16_to_utf8(const wchar_t *text16)
    if (!text16)
      return NULL;
 
-#if WINVER >= 0x0600
    flag = WC_ERR_INVALID_CHARS;
-#endif
 
    size8 = WideCharToMultiByte(CP_UTF8, flag, text16, -1, NULL, 0, NULL, NULL);
    if (size8 == 0)