#429 -febcdic-table: option to specify conversion table via trnaslation table files

[Simon Sobisch]

After GC 3.2rc-1 got released, we found that the newly hard-wired collations are incomplete and also got back to the "old" request of allowing users to easily adjust / add collation tables via files.

This issue is about tracking the actual changes and spec (and provide a FR reference for the ChangeLogs).
Note: Also related to [feature-requests:#426], which won't be handled completely in 3.2.

Things to do:

• replace newly added conversion tables by files, installed in "config"; potentially adding additional ones "as useful"
• reading of the translation tables ".ttbl" should be done similar to the configuration files in common.c (in a later version there should be a refactoring to combine the code)
• as with the "old" -febcdic-table: the tables are processed by libcob, but used in cobc; it is made available in libcob to be usable for other software that operates with libcob (for example GCSORT)
• document the adjusted option febcdic-table and file format in gnucobol.texi

I expect to release rc-2 with some minor fixes and this adjustment shortly after it is available.

[Simon Sobisch]

Implemented with [r4959]