Fixes for 64bit Windows and Delphi 10.2/10.3#44

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Commits on Feb 1, 2019

-changed procedure GDIError to use Length instead of SizeOf so it work correctly when Char is WideChar
dmz73
committed
-fixed JclDebug to work correctly when 64bit system has more than 4GB memory
dmz73
committed
-fixed to work correctly in Delphi 10.2/10.3
dmz73
committed