new sort(1) sort order proposal

[Samium Gromoff]

        Hello folks, i think it would be rather useful to have a
sort mode which will sort version numbers in the right way, cause now
0.100 < 0.4, and we need otherwise.

bash-2.05# (echo 1.1; echo 2.11; echo 0.11; echo 0.4.3; echo 1.41; echo 2.14; 
echo 21.0; echo 0.101.1) | sort
0.101.1
0.11
0.4.3
1.1
1.41
2.11
2.14
21.0


regards, Samium Gromoff