K 10 svn:author V 10 nwhitehorn K 8 svn:date V 27 2014-08-07T21:00:16.093937Z K 7 svn:log V 172 Retire vd_maskbitbltchr. The same functionality can be obtained by testing for mask != NULL in vd_bitbltchr, which all implementations of vd_bitbltchr() were doing anyway. END