App Data localtion should be customable

[caoxingk]

OK, ticket #2173 said the Windows App Data, should be
stored in [system drive]:\Documents and Settings\[logged on
username]\Application Data\[Filezilla] ...

And there, i suggest it should be point by commond line option,
like google chrome's --user-data-dir <path-for-custom> or any else it can do this...

Any body want a portable version for filezilla client on USB strore device really need this feature.

[caoxingk]

i checked filezilla client on windows nt 5.1 by run it with "filezilla.exe -h",
no command option means to support this function i said,
so, this ticket created.

[caoxingk]

P.S

relative path
absolute path

both need support when command line option pointed.