README: small fixups

Don't refer to INSTALL files that don't exist any more.
Make it clear that the libssl and libcrypto libraries may be named
differently on different platforms.
Reviewed-by: NRich Salz <rsalz@openssl.org>

README

@@ -27,10 +27,10 @@
 
  The OpenSSL toolkit includes:
 
- libssl.a:
+ libssl (with platform specific naming):
      Provides the client and server-side implementations for SSLv3 and TLS.
 
- libcrypto.a:
+ libcrypto (with platform specific naming):
      Provides general cryptographic and X.509 support needed by SSL/TLS but
      not logically part of it.
 
@@ -48,10 +48,8 @@
  ------------
 
  See the appropriate file:
-        INSTALL         Linux, Unix, etc.
+        INSTALL         Linux, Unix, Windows, OpenVMS
         INSTALL.DJGPP   DOS platform with DJGPP
-        INSTALL.VMS     VMS
-        INSTALL.WIN     Windows
         INSTALL.WCE     Windows CE
 
  SUPPORT