Tidying up various things; nothing substantial.

Tidying up various things; nothing substantial.

1. Moved most of the header into the implementation, since most of it
is not referenced anywhere else, and is not likely ever to be.

2. Sprinkled the const qualifier here and there.

3. Cleaned up the white space and comments a bit.

M    src/jserver/osrf_chat.c
M    src/jserver/osrf_chat.h

git-svn-id: svn://svn.open-ils.org/OpenSRF/trunk@1923 9efc2488-bf62-4759-914b-345cdb29e865