Some non-threatening fixes to some headers, as well as some casting
changes that make winelib more win32 code compatible.

diff --git a/include/winuser.h b/include/winuser.h
index c6bbdff..2fd7be8 100644
--- a/include/winuser.h
+++ b/include/winuser.h
@@ -1026,6 +1026,7 @@
 #define CS_BYTEALIGNCLIENT  0x1000
 #define CS_BYTEALIGNWINDOW  0x2000
 #define CS_GLOBALCLASS      0x4000
+#define CS_IME              0x00010000
 
 #define PRF_CHECKVISIBLE    0x00000001L
 #define PRF_NONCLIENT       0x00000002L