Move excpt.h out of include/msvcrt/ as it does not conflict with any
standard Unix header.

diff --git a/loader/resource.c b/loader/resource.c
index 27daad7..07ab9d5 100644
--- a/loader/resource.c
+++ b/loader/resource.c
@@ -42,7 +42,7 @@
 #include "wine/debug.h"
 #include "winerror.h"
 #include "winnls.h"
-#include "msvcrt/excpt.h"
+#include "excpt.h"
 
 WINE_DEFAULT_DEBUG_CHANNEL(resource);