wip use my erp5 branch

Since ERP5 commit 8f3b77517e (Force use of the new TimerServer, 2019-09-13)
the timerserver egg is not longer used, so it's not needed to install
and configure it.

build on zope4

wip : patches

update patches

reactivatee some patches & egg and remove dep to old ZSQLMEthod

fix zope patch

add Sessions product

reintroduce reStructuredText

use ExternalEditor compatible with Zope4

reinstroduce the config of _Z2PORT and _Z2HOST for testing

fix patch ?

add CMFDefault

Revert "add CMFDefault"

This reverts commit 3e3545ebd02fa188f4265301bbbf6b6b0f0dad9b.

pin eggs version

jerome: stop allowing version picking and pin versions

In ubuntu 21.04 (libc6 2.33-0ubuntu5) or current debian testing
(libc6 2.32-5) no longer use open to open /etc/hosts, but what appears
as "openat" in strace output - but can not be injected by

This uses https://github.com/figiel/hosts which uses another approach
of overloading getaddrinfo, gethostbyname* and inet_aton. This does not
original version of libuserhosts, but a version slightly modified to
behave the same way as nexedi's userhosts.

IMS and MME are in the same instance, but there is only one TUN
per instance. IMS is not crucial right now so we temporarily remove it
until we implement a clean solution.

We were trying to patchelf a file that apparently exists when Theia
is compiled on Debian 8, 10 and 11, but not on Debian 9.

See merge request nexedi/slapos!1105

Include the hash of all parameters related to the embedded instance
as a comment in the standalone script, so that if the hash changes,
the script and its own hash change as well, and standalone service
will be restarted.

Generate standalone script in instance-theia.cfg.jinja.in instead of
in software.cfg, avoiding the need to forward all the parameters.

Include the hash of the relevant parameters in the abstract socket path,
so that when changing these instance parameters the promise waits until
the standalone service has taken the new parameters into account.

Change "Embedded Instance" to "embedded_instance", and rename existing
"Embdded Instance" into "embedded_instance" for compatibility.

Installing will setup git hooks, so we can do one step further and
also configure the mergetool

otherwise curl uses system ca-certificates if the system package is
installed and otherwise is not able to verify server certificates,
usually being observed in slapos as git refusing to clone with error:
SSL certificate problem: unable to get local issuer certificate

See merge request nexedi/slapos!1103

On Debian 9, the given rpath seem to be ignored when compiling
the `keytar` dependency of theia, for unknown reasons.

- Move [theia] section and dependencies into component/theia
- Make [theia] section shared

This was missing in this software and in 03c5b311 (Stop using
hexagonit.recipe.download, 2021-12-03) the hash got out of sync

also mention automatic installation method