Co-authored-by: Andreas Rumpf <rumpf_a@web.de>
(cherry picked from commit d2f4f25)

(cherry picked from commit f1ce173)

(cherry picked from commit fdd4391)

* CIs: attempt to use csources_v1
* also updated the BSDs
* also updated azure pipelines
* std modules should not itself use the 'std/' import dir...
* compiler has to be careful with std/ for v1 booting

(cherry picked from commit a9b62de)

* Fixes #16436

* Comments addressed

(cherry picked from commit 4ae5207)

* Check for errors after sendPendingSslData

* Leftover comment removed

(cherry picked from commit 165d397)

Signed-off-by: Dankr4d <dude569@freenet.de>
(cherry picked from commit 6916faf)

(cherry picked from commit 51f3ef6)

…iable (#17988) [backport:1.2]

* implements #17855

(cherry picked from commit 378ee7f)

…rt:1.4] (#17991)

(cherry picked from commit 2c2ec48)

* ORC: improvements
* ORC: fix .acyclic annotation for ref objects

(cherry picked from commit 39ad9a6)

* ORC: progress

* ORC: bugfix; don't follow acyclic data even if only at runtime the subtype is marked as acyclic

* progress

* minor style changes

(cherry picked from commit 3bc625a)

 increase timeout for tchannels (#18012)

(cherry picked from commit 2ce592a)

Fix #17925

(cherry picked from commit 99788ee)

…8040)

* ARC: fixes memory leaks with newSeq used in a loop [backport:1.4]
* Update tests/arc/tnewseq_legacy.nim

(cherry picked from commit 53935b8)

…backport:1.2]

Copying StackTraceEntry instances when nimStackTraceOverride is defined
breaks the link between a cstring field that's supposed to point at
another string field in the same object.

Sometimes, the original object is garbage collected, that memory region
reused for storing other strings, so when the StackTraceEntry copy tries
to use its cstring pointer to construct a traceback message, it accesses
unrelated strings.

This only happens for async tracebacks and this patch prevents that by
making sure we only use the string fields when nimStackTraceOverride is
defined.

Async tracebacks also beautified slightly by getting rid of an extra line
that was supposed to be commented out, along with the corresponding debugging output.

There's also a micro-optimisation to avoid concatenating two strings just
to get their combined length.

(cherry picked from commit a1c82c3)

…18051)

(cherry picked from commit df429fa)