e_os.h does not belong with the exported headers. Do not put it there
and make all files the depend on it include it without prefixing it
with openssl/.
This means that all Makefiles will have $(TOP) as one of the include
directories.
diff --git a/ssl/ssltest.c b/ssl/ssltest.c
index cbcb00c..865ff7a 100644
--- a/ssl/ssltest.c
+++ b/ssl/ssltest.c
@@ -117,7 +117,7 @@
#include <string.h>
#include <time.h>
-#include "openssl/e_os.h"
+#include "e_os.h"
#include <openssl/bio.h>
#include <openssl/crypto.h>
