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/install.com b/install.com
index e09d13a..86fae7e 100644
--- a/install.com
+++ b/install.com
@@ -53,7 +53,7 @@
 	   CREATE/DIR/LOG WRK_SSLROOT:[VMS]
 $
 $	SDIRS := CRYPTO,SSL,RSAREF,APPS,VMS!,TEST,TOOLS
-$	EXHEADER := e_os.h,e_os2.h
+$	EXHEADER := e_os2.h
 $
 $	COPY 'EXHEADER' WRK_SSLINCLUDE: /LOG
 $	SET FILE/PROT=WORLD:RE WRK_SSLINCLUDE:'EXHEADER'