[Fixes bug #1190864] Correct the hotspot of the text cursor.
[Fixes bug #1190864] Correct the hotspot of the text cursor.

This makes positioning text much easier.

Fenex/Pinta,PintaProject/Pinta,Mailaender/Pinta,jakeclawson/Pinta,PintaProject/Pinta,jakeclawson/Pinta,PintaProject/Pinta,Fenex/Pinta,Mailaender/Pinta