Set the last supported OCaml version for these camlp4-dependent packages to 4.08

[XVilka]

I exported the published packages list that still rely on the camlp4 (I removed all pa_* packages as obsolete, and some of the packages that dropped camlp4 already, but not yet released, like coq or cocinelle):

• abt
• archimedes>=0.4.15
• batshbuild & >=0.0.6
• bisect
• bolt
• bookaml
• CamlGI
• config-file
• custom_printf
• deriving
• deriving-ocsigen
• devkitbuild
• dyntype
• enumerate
• erm_xmpp
• estring
• extprotbuild & >=1.3.0
• extunixbuild
• faillib
• format
• froc
• gettext
• glsurfbuild
• hardcaml-yosys
• haxebuild
• heptagonbuild
• herelib
• integration1dbuild
• iso-filesystem
• javalib>=2.3.2
• jitsubuild
• joolog
• js-lz4
• json-static
• krb5
• lablgl
• lambda-term=1.6
• lambdoc
• lascar
• lazy-trie=1.1.0
• lbfgsbuild
• lutils
• lutin
• lwt_camlp4
• macaque
• mascot
• mikmatchbuild
• mirage-entropy-unix
• mirage-entropy-xenbuild
• missinglib
• mldonkey>=3.1.3
• objsize
• ocamldot
• ocamldsort
• ocamlscript
• ocamlviz
• ocapic>=3.3
• oclaunch=0.2.1
• odb-server
• optcomp
• ospec>=0.3.0
• pfff
• phoxbuild
• pipebang
• planck<2.1.0 | >=2.2.0
• rdbgbuild
• release>=1.1.1
• rfsm
• schoca
• sibylfs
• spoc>=20170724
• testrunner
• text>=0.8.0
• tftp
• type_conv
• ulex - it was ported to camlp5 already, but it is better to switch to sedlex, see https://discuss.ocaml.org/t/camlp5-and-ocaml-4-08/3985/5 for more information
• usb
• vrtbuild
• wyrd>=1.4.6
• xe
• xentropyd>=0.9.3
• xstrp4

So it makes sense to migrate the packages either to ppx, or to menhir/ocamllex/angstrom/whatever. Or, in the worst case - to camlp5. And if the project is dead - set the upper limit of the OCaml version to 4.08 in the opam file. So it makes sense to ping the maintainers of these packages.

See the Camlp4 deprecation announcement.

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