Add a source file for the message classes (draft)

Define the message type classes …

Update the source file from its template in the `templates' branch.

Replace the inline docstring with a comment

Export the maximal message size constant

Revert "Define the message type classes" …

This reverts commit 5ef3c5e.

Redefine base classes to be used with the mempair module

Define message classes …

Add the generated definition of the message classes.
See the `templates' branch for more information.

Define the `p9qid' structure

Initialize the __all__ variable

Use byte array types for `data' fields …

Use byte array types for `data' fields of the Rread and Twrite
messages.

Add the normal (default) message size constant …

Let the default message buffer length be the usual memory page length
of 4096 bytes.

Fix definition of some tails …

- Do not define a tail if header is empty.
- Use index for variable-length complex arrays.

Export all p9* types

Use mempair to parse incoming message header

Add a warning about the genarated part

Export the message types explicitly

Use a queue to process messages asynchronously

Get T-version/R-version to work

Implement multi-message sessions

Fix the reply message send …

Use the client socket.

Fix the send buffer length …

Use buf/databuf mempair methods.

Fix the `size' field of the message to be sent

Define arrays and strings only as tails

Fix/improve the cdarclass descriptions

Fix the Rerror message composing

Fix the `size' field before length check is done on reply

Address the header fields by name to test the new mempair functionality

Name variable-length fields via `cdrmap'

Address all fields by name

Export the "p9msgclasses" tuple

Use class constants for message type numbers

Define the _type field with a type number value for each message class