veil - veil: Initial release of changes for serialisation.

Log Message:
-----------
Initial release of changes for serialisation. All session variables
are now serialisable. Still need to do serialisation of the session
as a whole. Also comments are needed but regression tests look good.

Modified Files:
--------------
veil/demo:
funcs.sql (r1.2 -> r1.3)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/veil/veil/demo/funcs.sql.diff?r1=1.2&r2=1.3)
veil/docs:
Doxyfile (r1.11 -> r1.12)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/veil/veil/docs/Doxyfile.diff?r1=1.11&r2=1.12)
veil/regress:
regress.sh (r1.5 -> r1.6)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/veil/veil/regress/regress.sh.diff?r1=1.5&r2=1.6)
veil/src:
veil_bitmap.c (r1.4 -> r1.5)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/veil/veil/src/veil_bitmap.c.diff?r1=1.4&r2=1.5)
veil_config.c (r1.3 -> r1.4)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/veil/veil/src/veil_config.c.diff?r1=1.3&r2=1.4)
veil_datatypes.h (r1.5 -> r1.6)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/veil/veil/src/veil_datatypes.h.diff?r1=1.5&r2=1.6)
veil_funcs.h (r1.5 -> r1.6)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/veil/veil/src/veil_funcs.h.diff?r1=1.5&r2=1.6)
veil_interface.c (r1.7 -> r1.8)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/veil/veil/src/veil_interface.c.diff?r1=1.7&r2=1.8)
veil_interface.sqs (r1.3 -> r1.4)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/veil/veil/src/veil_interface.sqs.diff?r1=1.3&r2=1.4)
veil_shmem.c (r1.7 -> r1.8)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/veil/veil/src/veil_shmem.c.diff?r1=1.7&r2=1.8)
veil_variables.c (r1.5 -> r1.6)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/veil/veil/src/veil_variables.c.diff?r1=1.5&r2=1.6)
veil_version.h.in (r1.7 -> r1.8)
(http://cvs.pgfoundry.org/cgi-bin/cvsweb.cgi/veil/veil/src/veil_version.h.in.diff?r1=1.7&r2=1.8)