The put/get free context cycle in ContextManager::start() (if
continuation stealing is enabled) became unnecessary with
c66551bf ("[Context] Use 'jmp' instead of 'ret' to kickoff the
context").

Fix ContextManager with MemoryManager

See merge request !395

Even though the MemoryManager is enabled for the ContextManager per
default, it never was actually used due a logic bug. Squash that bug!

In case a Context has been retrieved from the MemoryManager, without
it malloced, then we need to re-initialze some of the Context's values
before we can use the Context.

Kickoff context using 'jmp' instead of 'ret'

See merge request !394

My system running 5.15.43 also returns ECANCELED.

[SemaphoreWorkerSleepStrategy] Improve code comment

See merge request !385

[gitlab-ci] Bump debian-testing-dev image to 1.23

See merge request !391

Newer iwyu versions will exit with an error code in case include
issues have been found.

echoclient: initialize variable to fix building with gcc 12.1

See merge request !388

pulse: only measure time between work creation and dispatching it

See merge request !386

runtime: do not notify workers about termination if they do not sleep

See merge request !387

I stumbled upon this because the no-sleep variants in the pulse evaluation
showed notifications in their stats.

We do not need to measure the work duration which is the known pulse.
This makes comparing the raw data easier because the latency does not
include the pulse duration.

fsearch: add possible semaphore limiting the concurrenct open requests

See merge request !382

add additional mode of introducing work

See merge request !383

The default is Burst mode which inserts new work as fast as possible
sleeping until the next pulse.
Even mode distributes the new work evenly in the duration between two
pulses.

Improve pulse evaluation

See merge request !381

[io] Transform assert() to EMPER_ASSERT_MSG() in GlobalIoContext

See merge request !380

[apps/FibChildStealing] Improve fibNum arg parsing

See merge request !379

We recently saw this assert triggering in our CI. Let's yank up its
verbosity.

Also, don't set an unsigned to -1…

make sleep semaphore threshold configurable

See merge request !378

increase the sleep semaphore threshold

See merge request !377

Pulse: initial pulse evaluation commit

See merge request !376

fsearch: add more fine grained control about the used fiber throttles

See merge request !375