See

louiz/biboumi#3215
https://github.com/andikleen/glibc/blob/master/time/strptime_l.c#L746-L747

for why strptime() sucks

We use std::get_time now, to parse the date and time. And we parse the
timezone by hand.

fix #3215

Was completely broken, and the test was just useless

Also, some tests that were raising some exception and thus were not ran at all

fix #3213

fix coverity CID 153376

fix coverity CID 134470

fix coverity CID 134469

fix #3205

fix #3069

fix #3210

fix #3207

Because some plateform accept Z and z, but some only accept z…

ref #2948

Also add a e2e test for the list query

Thank you, e2e tests

And make things a little bit clearer

Avoids a conflict between /usr/include/uuid.h and
/usr/local/include/uuid/uuid.h on freebsd

This coverage is probably more useful than the other one, because it’s not
really reasonable to try to cover everything with simple units test (e.g. on
network code etc).
However, we should strive to have 100% coverage with our e2e tests.

This makes it possible to execute an ad-hoc command on a server, with
clients like Gajim, for example.

fix #3209

If anybody knows why fedora accepts both, but it only works with %z on
debian, please tell me.

Because, I don’t know why but, this doesn’t work.