updated for version 7.3.774
Problem:    Tiny GUI version misses console dialog feature.
Solution:   Define FEAT_CON_DIALOG when apprpriate. (Christian Brabandt)
Added tag v7-3-774 for changeset a8f5876e4981
updated for version 7.3.775
Problem:    Cygwin and Mingw builds miss dependency on gui_w48.c.
Solution:   Add a build rule. (Ken Takata)
Added tag v7-3-775 for changeset a6e60677aea7