Indian scripts: More fixes after the recent import.

Indian scripts: More fixes after the recent import.

After the recent import of month names from CLDRv31 (bug 21217,
commit c853f14) an import of abbreviated month names is also needed
to make sure they match the full forms.

In case of kok_IN CLDR does not provide the abbreviated month names
explicitly but uses full month names in such cases so abmon section
has been copied from mon.

* localedata/locales/as_IN (abmon): Update from CLDR.
* localedata/locales/bn_BD (abmon): Likewise.
* localedata/locales/bn_IN (abmon): Likewise.
* localedata/locales/gu_IN (abmon): Likewise.
* localedata/locales/hi_IN (abmon): Likewise.
* localedata/locales/kn_IN (abmon): Likewise.
* localedata/locales/ml_IN (abmon): Likewise.
* localedata/locales/mr_IN (abmon): Likewise.
* localedata/locales/ne_NP (abmon): Likewise.
* localedata/locales/or_IN (abmon): Likewise.
* localedata/locales/pa_IN (abmon): Likewise.
* localedata/locales/ta_IN (abmon): Likewise.
* localedata/locales/te_IN (abmon): Likewise.

* localedata/locales/kok_IN (abmon): Likewise but copied from mon.