GIOP 1.2 message bodies not aligned on 8 byte boundaries

The current JDK 1.4 and J2EE 1.3 ORBs do not align GIOP 1.2 message bodies on 8 byte boundaries.

See the main CORBA specification 00-11-03:

15.4.2.2 Request Body

In GIOP version 1.2, the Request Body is always aligned on an 8-octet boundary.

15.4.3.2 Reply Body

In GIOP version 1.2, the Reply Body is always aligned on an 8-octet boundary.

15.4.6.2 LocateReply Body

In GIOP version 1.2, the Reply Body is always aligned on an 8-octet boundary.

This prevents interoperability with other GIOP 1.2 implementations.
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###@###.### 2001-10-24
Fix verified OK:
- using build:
         j2sdk-1_4_0-beta3-bin-b84-solsparc-20_oct_2001
         rip_int-1_0-fcs-src-b54-solsparc-25_jun_2000 (this build went into j2ee1.3-beta2)
and rip_int-1_0-fcs-src-b67-solsparc-22_oct_2000
- by inspecting code at: com/sun/corba/se/internal/iiop/messages

Since a bug has been filed and closed to remove the alignment of messages from LocateReplyMessage, I have hence verified the existence of the alignment of message boundaries for Reply and Request messages only. Refer BugId:4468926
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