imm32: Add a couple of missing prototypes and update win32.api to fix the winapi_check warnings.

include/imm.h

@@ -511,6 +511,9 @@ DWORD    WINAPI ImmGetGuideLineW(HIMC, DWORD, LPWSTR, DWORD);
 UINT   WINAPI ImmGetIMEFileNameA(HKL, LPSTR, UINT);
 UINT   WINAPI ImmGetIMEFileNameW(HKL, LPWSTR, UINT);
 #define  ImmGetIMEFileName WINELIB_NAME_AW(ImmGetIMEFileName)
+DWORD  WINAPI ImmGetImeMenuItemsA(HIMC, DWORD, DWORD, LPIMEMENUITEMINFOA, LPIMEMENUITEMINFOA, DWORD);
+DWORD  WINAPI ImmGetImeMenuItemsW(HIMC, DWORD, DWORD, LPIMEMENUITEMINFOW, LPIMEMENUITEMINFOW, DWORD);
+#define ImmGetImeMenuItems  WINELIB_NAME_AW(ImmGetImeMenuItems)
 BOOL   WINAPI ImmGetOpenStatus(HIMC);
 DWORD    WINAPI ImmGetProperty(HKL, DWORD);
 UINT   WINAPI ImmGetRegisterWordStyleA(HKL, UINT, LPSTYLEBUFA);

tools/winapi/win32.api

@@ -1701,6 +1701,7 @@ BOOL
 DWORD
 HIMC
 HKL
+HIMCC
 HWND
 LONG
 LPARAM
@@ -1715,8 +1716,11 @@ LPCANDIDATELIST
 LPCOMPOSITIONFORM
 LPCVOID
 LPDWORD
+LPINPUTCONTEXT
 LPLOGFONTA
 LPLOGFONTW
+LPIMEMENUITEMINFOA
+LPIMEMENUITEMINFOW
 LPPOINT
 LPSTYLEBUFA
 LPSTYLEBUFW