Add aliases for IBM00858 and IBM01140

[serhiy-storchaka]

Bug report

It turned out that for two encodings, IBM00858 and IBM01140, we do not have aliases for their officially registered names, nor for official aliases. Instead we only have names and aliases with stripped 0s -- cp858, ibm858, cp1140, ibm1140.

We keep 0 in the name of IBM037 (aka cp037).

On Windows, different codecs are used for cp00858 and cp858, and only the latter works on Linux.

cc @malemburg

Linked PRs

• gh-149801: Add IANA registered names and aliases with leading zeros #149804

[serhiy-storchaka]

Source: https://www.iana.org/assignments/character-sets/character-sets.xhtml