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Following patch adresses 2 issues:

1. Row limitation:
Rows were limited by 10000 lines (see also BR 11819):

I don't know if all the changes were realy necessary, but from my point all 
are obvious:
file kspread_canvas.cc: Limitation should be more than 9999 lines/columns

file kspread_cluster.h: This is the main reason for the limitation. 

file kspread/kspread_layout.cc: Again a limitation by 10000

file kspread_table.cc: Don't know if this part is necessary, but I think 
int=0x10000 is wrong, it should be maximum int=0xFFFF.
But this should be left to one, that knows the difference better.
Even in the worst case 0x8000 should already be the end.

2. Limitation of column labels:
file: kspread_util.cc
I already sent this to the koffice mailing list and still think, that this 
single part doesn't have an logical influence on the other part of the code.
Again this patch makes only possible that this routine can generate senseful 
text labels for values > 26*26. It can now generate texts for values up to 
2^16 values, even if it is limited by code to 2^15.

Please apply.

Philipp

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