largely based on the relevant portion of the unusedfields loplugin, but
adapted for local vars

Change-Id: Ic522a941573940e8f75c88f90ba5f37508ca49b1
Reviewed-on: https://gerrit.libreoffice.org/66835
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

jvmaccess, jvmfwk, l10ntools, libreofficekit and linguistic

Change-Id: I9d290d1098b25ccb3aee19d2df18c18f4aa65105
Reviewed-on: https://gerrit.libreoffice.org/51495Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Julien Nabet <serval2412@yahoo.fr>

Change-Id: I6f18ab4dc082e30e51b4c0020dff4ff098275b60

...see dictionaries comits df423c53829faa96f46acd71887fd0f8697c49e9
"fix Lithuanian thesaurus" and 9b6407dadc64e10e7117d8551917b46105ecc6c8
"Fix more thesauri."

Change-Id: I6ddc41fce4e3f68d80d05af3320c835b98908fcb

So dictionaries is again a nice data-only module and we do not need to
build it in build phase of cross-compilation. It really does not make
sense to build a gazillion of extensions just because we will need one
tiny tool later...

Change-Id: I23f01b818afba1bc8cc88ef3e8305ecfb7a193c0