updated for version 7.4.322
Problem:    Using "msgfmt" is hard coded, cannot use "gmsgfmt".
Solution:   Use the msgfmt command found by configure. (Danek Duvall)
Added tag v7-4-322 for changeset fd96c55d683d
updated for version 7.4.323
Problem:    Substitute() with zero width pattern breaks multi-byte character.
Solution:   Take multi-byte character size into account. (Yukihiro Nakadaira)
Added tag v7-4-323 for changeset 238f5027830c
updated for version 7.4.324
Problem:    In Ex mode, cyrillic characters are not handled. (Stas Malavin)
Solution:   Support multi-byte characters in Ex mode. (Yukihiro Nakadaira)
Added tag v7-4-324 for changeset c476e0ac8b40
Update runtime files.