* harbour/include/hbgtcore.h
* harbour/source/rtl/hbgtcore.c
+ added two new methods:
TOUCHLINE() - marks line as modified
REDRAWDIFF() - it contains REFRESH() from which is now called so
it's possible to overload this method by upper level RDDs without
touching REFRESH() method which can be overloaded by intermediate
RDDs
* harbour/contrib/hbct/ctwin.c
% do not use EXPOSEAREA() and TOUCHCELL() methods but TOUCHLINE()
only and overloaded REDRAWDIFF() - it should gives noticeable
speed improvement in some where cost of screen update is very
big and GT does not calculate minimal update area.
* harbour/source/rdd/dbfnsx/dbfnsx1.c
% minor speed improvement in key decoding
507ea35468