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Remove dead generators for cyrillic encoding conversion tables
These tools were used to read the koi-iso.tab, koi-win.tab, and koi-alt.tab files, which contained the mappings between the single-byte cyrillic encodings. However, those data files were removed in commit 4c3c8c0, back in 2003. These code generators have been unused and unusable ever since. The generated tables live in cyrillic_and_mic.c. There has been one change to the tables since they were generated in 1999, in commit f4b7624. So if we resurrected the original data tables, that change would need to be taken into account. So this code is very dead. The tables in cyrillic_and_mic.c, which were originally generated by these tools, are now the authoritative source for these mappings. Reviewed-by: Tom Lane, Aleksander Alekseev Discussion: https://www.postgresql.org/message-id/flat/a821c3dc-36ec-4cee-8b41-7ccaa17adb18@iki.fi
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‎src/backend/utils/mb/README

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@@ -8,9 +8,6 @@ mbutils.c: public functions for the backend only.
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stringinfo_mb.c: public backend-only multibyte-aware stringinfo functions
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wstrcmp.c: strcmp for mb
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wstrncmp.c: strncmp for mb
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win866.c: a tool to generate KOI8 <--> CP866 conversion table
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iso.c: a tool to generate KOI8 <--> ISO8859-5 conversion table
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win1251.c: a tool to generate KOI8 <--> CP1251 conversion table
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See also in src/common/:
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‎src/backend/utils/mb/iso.c

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‎src/backend/utils/mb/win1251.c

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‎src/backend/utils/mb/win866.c

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