k4run: fix more bugs

[Zehvogel]

BEGINRELEASENOTES

• k4run: give exec its own dict for globals and locals to make list comprehensions usable in option files again
• k4run: make configurables a frozenset to avoid duplicates

ENDRELEASENOTES

see also #141

[andresailer]

Please install pre-commit, and then pre-commit install in your working directory.

[Zehvogel]

fixes #141
see: #141 (comment)

[jmcarcell]

By the way:

In [7]: %timeit frozenset(ApplicationMgr().allConfigurables.values())
3.78 µs ± 9.98 ns per loop (mean ± std. dev. of 7 runs, 100,000 loops each)

In [8]: %timeit set(ApplicationMgr().allConfigurables.values())
3.86 µs ± 8.5 ns per loop (mean ± std. dev. of 7 runs, 100,000 loops each)

In [9]: %timeit set(ApplicationMgr().allConfigurables.values())
3.77 µs ± 12.3 ns per loop (mean ± std. dev. of 7 runs, 100,000 loops each)

so it's the same