Implement construction of finite state machine by copying another machine

[cheuberg]

sage: F = FiniteStateMachine()
sage: FiniteStateMachine(F)

led to a NotImplementedError.

This is now implemented.

Depends on #16786 as the documentation refers to the attributes input_alphabet, output_alphabet.

Depends on #16786

CC: @dkrenn @sagetrac-skropf

Component: finite state machines

Keywords: copy, initialization

Author: Clemens Heuberger

Branch/Commit: 90e60b5

Reviewer: Daniel Krenn

Issue created by migration from https://trac.sagemath.org/ticket/16787

[dkrenn]

Changed branch from u/cheuberg/fsm/copy-from-other to u/dkrenn/fsm/copy-from-other

[dkrenn]

Changed commit from 0b55463 to 04fdac4

[dkrenn]

comment:4

I've moved the tests with wrong input to the test section. Apart from this, everything looks good, doctests pass and so on. Positive for me; feel free to set it to positive_review after cross-reviewing my changes.

---

New commits:

04fdac4

moved tests to TEST-section of docstring

[dkrenn]

Reviewer: Daniel Krenn

[cheuberg]

Changed branch from u/dkrenn/fsm/copy-from-other to u/cheuberg/fsm/copy-from-other

[sagetrac-git]

Changed commit from 04fdac4 to 90e60b5

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

90e60b5

Merge branch 'develop' into fsm/copy-from-other

[cheuberg]

comment:7

Your change is fine; however, commit 04fdac4 lead to a merge conflict with #16538. I therefore merge 6.4.rc1.

Please cross-review the resolution of the merge conflict.

[vbraun]

Changed branch from u/cheuberg/fsm/copy-from-other to 90e60b5