- initial build for Sisyphus

libxml2 2.12.1 failed with this error:

xml-c.c:92:9: warning: implicit declaration of function ‘xmlReadMemory’; did you mean ‘xmlInitMemory’? [-Wimplicit-function-declaration]
   92 |   doc = xmlReadMemory (String_val (xmlv), caml_string_length (xmlv),
      |         ^~~~~~~~~~~~~
      |         xmlInitMemory

This fixes the following runtime error when parsing init-file.

$ virt-top --init-file <(echo "sort id")
Error: Invalid_argument("String.sub / Bytes.sub")
Raised at Stdlib.invalid_arg in file "stdlib.ml", line 30, characters 20-45
Called from Stdlib__String.sub in file "string.ml" (inlined), line 50, characters 2-23
Called from Utils.split in file "utils.ml", line 82, characters 24-68
Called from Utils.read_config_file.(fun) in file "utils.ml", line 114, characters 23-37
Called from Stdlib__List.map in file "list.ml", line 92, characters 20-23
Called from Top.start_up.try_to_read_init_file in file "top.ml", line 153, characters 17-42
Called from Main.script_mode in file "main.ml", line 37, characters 6-17

Signed-off-by: Yuya Higashi <higashi.yuya@fujitsu.com>

To prevent libvirtd from printing virNetSocketReadWire I/O errors when
the virt-top command exits, explicitly disconnect from libvirtd.

Signed-off-by: Yuya Higashi <higashi.yuya@fujitsu.com>

libvirt: VIR_ERR_NO_DOMAIN: VIR_FROM_QEMU: Domain not found: no domain with matching uuid '231eb609-fe6c-4de5-abbc-e1f834457c37'
Raised by primitive operation at Libvirt in file "libvirt.ml" (inlined), line 573, characters 0-1023
Called from Collect.collect.(fun) in file "collect.ml", line 168, characters 18-44
Called from Stdlib__List.map in file "list.ml", line 92, characters 20-23
Called from Stdlib__List.map in file "list.ml", line 92, characters 32-39
Called from Collect.collect in file "collect.ml", line 138, characters 4-1023
Called from Top.main_loop in file "top.ml", line 318, characters 16-29
Called from Main in file "main.ml", line 50, characters 4-19

This commit removes the dependency on the ancient and dead upstream
xml-light light.  It is replaced with the C library libxml2.  This
introduces a small amount of C code to interface with libxml2 and
parse the libvirt domain XML into the list of block devices and
network devices (using XPath).

This was a cut and paste error when I copied this file over from
libguestfs.

Fixes: commit 5405de2920fa56529b56f61ff683806e72ddfa6a

We only used a tiny number of features from this library, and it is
distributed under a compatible license so we might as well inline the
function we need.

We only used a handful of small functions from this library, so we can
completely remove the dependency easily.

In OCaml 4.13:

Alert ocaml_deprecated_cli: Setting a warning with a sequence of lowercase or uppercase letters,
like 'CDEFLMPSUVYZX', is deprecated.
Use the equivalent signed form: +C+D+E+F+L+M+P+S+U+V+Y+Z+X-3.

Move to the more usual (for us) even = stable, odd = unstable
semantic-ish versioning system, as used by olden days Linux.

This is the first in a new development series.

Users can easily read the git logs if they want this information.

We're meant to be using Weblate now.

Currently translated at 100.0% (84 of 84 strings)

Translation: virt-top/master
Translate-URL: https://translate.fedoraproject.org/projects/virt-top/master/cs/

Currently translated at 100.0% (84 of 84 strings)

Translation: virt-top/master
Translate-URL: https://translate.fedoraproject.org/projects/virt-top/master/id/

Currently translated at 100.0% (84 of 84 strings)

Translation: virt-top/master
Translate-URL: https://translate.fedoraproject.org/projects/virt-top/master/id/

Currently translated at 100.0% (84 of 84 strings)

Translation: virt-top/master
Translate-URL: https://translate.fedoraproject.org/projects/virt-top/master/fi/

Translated using Weblate (Finnish)

Currently translated at 67.8% (57 of 84 strings)

Translation: virt-top/master
Translate-URL: https://translate.fedoraproject.org/projects/virt-top/master/fi/

Added translation using Weblate (Finnish)

Currently translated at 1.1% (1 of 84 strings)

Translation: virt-top/master
Translate-URL: https://translate.fedoraproject.org/projects/virt-top/master/si/

Added translation using Weblate (Sinhala)

Currently translated at 100.0% (84 of 84 strings)

Translation: virt-top/master
Translate-URL: https://translate.fedoraproject.org/projects/virt-top/master/nl/

Currently translated at 100.0% (84 of 84 strings)

Translation: virt-top/master
Translate-URL: https://translate.fedoraproject.org/projects/virt-top/master/es/

Translated using Weblate (Spanish)

Currently translated at 84.5% (71 of 84 strings)

Translation: virt-top/master
Translate-URL: https://translate.fedoraproject.org/projects/virt-top/master/es/

Currently translated at 84.5% (71 of 84 strings)

Translation: virt-top/master
Translate-URL: https://translate.fedoraproject.org/projects/virt-top/master/es/

Currently translated at 20.2% (17 of 84 strings)

Translation: virt-top/master
Translate-URL: https://translate.fedoraproject.org/projects/virt-top/master/fr/

Currently translated at 100.0% (84 of 84 strings)

Translation: virt-top/master
Translate-URL: https://translate.fedoraproject.org/projects/virt-top/master/uk/

Currently translated at 100.0% (84 of 84 strings)

Translation: virt-top/master
Translate-URL: https://translate.fedoraproject.org/projects/virt-top/master/sv/

Currently translated at 100.0% (84 of 84 strings)

Translation: virt-top/master
Translate-URL: https://translate.fedoraproject.org/projects/virt-top/master/tr/

Currently translated at 100.0% (84 of 84 strings)

Translation: virt-top/master
Translate-URL: https://translate.fedoraproject.org/projects/virt-top/master/pl/

Translated using Weblate (Polish)

Currently translated at 100.0% (84 of 84 strings)

Translation: virt-top/master
Translate-URL: https://translate.fedoraproject.org/projects/virt-top/master/pl/

Updated by "Update PO files to match POT (msgmerge)" hook in Weblate.

Translation: virt-top/master
Translate-URL: https://translate.fedoraproject.org/projects/virt-top/master/

Fixes FTBFS with ocaml-libvirt 0.6.1.5.

RWMJ: Added documentation and changed the letter to 'M'.

File "top.ml", line 423, characters 14-31:
423 |       Failure "float_of_string" ->
                    ^^^^^^^^^^^^^^^^^
Warning 52: Code should not depend on the actual values of
this constructor's arguments. They are only for information
and may change in future versions. (See manual section 9.5)