AllAsString

[Christian Buhtz]

There is a helper function in src/generic/aboutdlg.cpp

// helper function: returns all array elements in a
// single comma-separated and
// newline-terminated string
static wxString AllAsString(const wxArrayString& a)

1. It is a needfull function (I asked for something like that before) 
and it should be "public".

2. We should rename the function to wxAllAsString() and move it to 
another file. Maybe common/arrstr.cpp or common/string.cpp.

What do you think about it?