debian: lintian indicates hardening-no-relro: panelui, module_helper

[smoe]

I wish there was a comment for panelui if the LDFLAGS were intentionally omitted.

We have no policy about the use of "@" (don't show the command) in Makefiles. I removed the one for the compilation of linuxcnc_module_helper since arguments to the compiler ar eimportant to know. Was tempted to introduce it for all the $(ECHO) instructions, though, since we have little incentive to read the same lines twice.

[smoe]

The warnings were observed on
https://udd.debian.org/lintian/?packages=linuxcnc

[smoe]

Hm. Seems like I was addressing panelui before at #3381,
albeit slightly differently.

I cannot confirm myself if panelui and linuxcnc_module_helper are indeed functional with the the -z relro added. If some good soul that is using those binaries could please confirm that for me and then this should go into the 2.9 branch, not against master. I would then also go and rebase what I did in #3381 accordingly.

[andypugh]

I think that panelui is something @c-morley wrote?
There seems to be a sample config to test it with:
sim/axis/panelui-demo

[smoe]

Just started the panelui demo and experienced no crashes. Seems like fine.
Lintian complained about lines too long in d/changelog and typos that I addressed (all typos, not all long lines).
Edited lintian overrides to eliminate some more warnings..

[smoe]

The build was cancelled. Did not break or anything. I think this can go in.

[BsAtHome]

The build was cancelled. Did not break or anything. I think this can go in.

See #3408.