[fpc-pascal] Patch: new XML export for FCL-DBreadyforinclusion, issue 19790 - includes Delphi Clientdataset

[Ludo Brands]

> > - ftWideString creates sometimes non ascii characters at 
> the end. This 
> > is not the case for TClientDataSet. Still looking in that one;
> Ok.

Problem is that when specifying a string larger than fieldsize, no closing
#0 is stored. When reading the string back, the string overruns the field
size until the first #0 encountered. Hence the "sometimes". Apparently a bug
in fcl-db. I'll raise a bug report.   

Ludo