[mythtv] mysql patch ?

[MaxPower]

I would like to modify videometadata in mysql.
videometadata.plot is to shot (varchar 255) I would modify to TEXT.
I don't know what kind of path I must make:
a diff betwen old and new metadat.sql
or
a file patch.sql whith something like that inside:
   ALTER TABLE videometadata CHANGE plot plot TEXT;


An other question. I'm french then I modify videomanager.cpp to allow me 
to search movie informations from a french site.
I can't make a patch with this because it won't be compatible with 
english version. What is the best way to allow non english user to use a 
other web side tah IMDB.
I think to create an abstract class and create inherited class for each 
language.
Any Idea ?

xavier