Issue #21971: Index and update turtledemo doc.
Remove unused and now removed config value.
Closes #19342: improve docstrings in grp module.
closes #22528: add source links to symtable and compileall
Issue #20076: Remove just added the sr_rs.utf8@latn alias because it is
derived from sr_rs@latin.
Issue #20079: Updated alias mapping to glibc 2.19 SUPPORTED file.