Missing compatibility for customized `TeX-command-list'

[Ikumi Keita]

Hi all,

Thanks to Uwe Brauer, I realized that an important compatibility is
missing in the current master branch. `TeX-command-list' has lists of
"available modes" for each command such as "LaTeX", "BibTeX". When a
user customized `TeX-command-list' before the feature branch merge, the
mode names in those lists are recorded in the former mode names. Hence
the current `TeX-mode-specific-command-list' doesn't recognize them and
C-c C-c doesn't offer "LaTeX" as an available command in LaTeX mode.

A tentative fix is attached with this message. I expect the performance
hit is small enough, but what do you think?
`TeX-mode-specific-command-list' is called repeatedly when "Command"
menu is opened.

Best regards,
Ikumi Keita
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0001-Cater-for-former-mode-name-in-customized-TeX-command.patch
Description: tentative fix