Fix bug #12878 with compilation failure with Visual C++ 11.0.

 src/w32select.c: Include w32common.h before w32term.h, so that
 windows.h gets included before w32term.h uses some of its
 features, see below.
 src/w32term.h (LOCALE_ENUMPROCA, LOCALE_ENUMPROCW) [_MSC_VER]: New
 typedefs.
 (EnumSystemLocalesA, EnumSystemLocalesW) [_MSC_VER]: New
 prototypes.
 (EnumSystemLocales) [_MSC_VER]: Define if undefined.

1 files changed, 15 insertions, 0 deletions

diff --git a/src/w32term.h b/src/w32term.h
index af5b37a1171..6e30d374c82 100644
--- a/src/w32term.h
+++ b/src/w32term.h
@@ -752,6 +752,21 @@ extern int w32_system_caret_height;
 extern int w32_system_caret_x;
 extern int w32_system_caret_y;
 
+#ifdef _MSC_VER
+#ifndef EnumSystemLocales
+/* MSVC headers define these only for _WIN32_WINNT >= 0x0500.  */
+typedef BOOL (CALLBACK *LOCALE_ENUMPROCA)(LPSTR);
+typedef BOOL (CALLBACK *LOCALE_ENUMPROCW)(LPWSTR);
+BOOL WINAPI EnumSystemLocalesA(LOCALE_ENUMPROCA,DWORD);
+BOOL WINAPI EnumSystemLocalesW(LOCALE_ENUMPROCW,DWORD)
+#ifdef UNICODE
+#define EnumSystemLocales EnumSystemLocalesW
+#else
+#define EnumSystemLocales EnumSystemLocalesA
+#endif
+#endif
+#endif
+
 #if EMACSDEBUG
 extern const char*
 w32_name_of_message (UINT msg);