Allow creating random permutations using a random source

[fingolfin]

This is an alternate of PR #573, but making use of InstallMethodWithRandomSource.

[codecov]

Codecov Report

Merging #1165 into master will increase coverage by 9.89%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1165      +/-   ##
==========================================
+ Coverage   58.46%   68.35%   +9.89%     
==========================================
  Files         434      435       +1     
  Lines      230449   230662     +213     
==========================================
+ Hits       134722   157677   +22955     
+ Misses      95727    72985   -22742

Impacted Files	Coverage Δ
lib/gpprmsya.gi	53.03% <100%> (+4.95%)	✅
lib/factgrp.gi	82.64% <ø> (-0.73%)	❌
src/saveload.c	62.97% <ø> (-0.66%)	❌
src/gmpints.c	93.81% <ø> (-0.26%)	❌
src/dt.c	1.82% <ø> (-0.01%)	❌
src/objects.h	100% <ø> (ø)	✅
lib/teachmod.g	12.94% <ø> (ø)
src/trans.c	99.8% <ø> (+0.03%)	✅
lib/package.gi	36.56% <ø> (+0.08%)	✅
lib/ctblmono.gi	62.63% <ø> (+0.09%)	✅
... and 214 more

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[stevelinton]

Looks good to me

[ChrisJefferson]

This looks fine. You could pop something like:

gap> randomTest(SymmetricGroup(2), Random);
gap> randomTest(SymmetricGroup(3), Random);
gap> randomTest(SymmetricGroup(4), Random);
gap> randomTest(AlternatingGroup(3), Random);
gap> randomTest(AlternatingGroup(4), Random);
gap> randomTest(AlternatingGroup(5), Random);

To the end of testinstall/random.tst (or I can do that later). The tests pass.

[markuspf]

Apart from the tests mentioned by @ChrisJefferson this looks good to me, too.

[fingolfin]

Rebased and added some tests, let's see how that works out.