Fix windows build and clean up use of <windows.h>

We want to globally define WIN_LEAN_AND_MEAN and WINVER to particular values so
let's do it in OS_CFLAGS.

Then, we can pepper in windows.h includes where using #includes that require it.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6783 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/net.c b/net.c
index 90c4b5b..c853daf 100644
--- a/net.c
+++ b/net.c
@@ -102,6 +102,7 @@
 #endif
 
 #ifdef _WIN32
+#include <windows.h>
 #include <malloc.h>
 #include <sys/timeb.h>
 #include <mmsystem.h>