#621 SpellChecker plugin 64 bits project files error

[Xaviou]

$(WX_CFG) is missing SpellChecker plugin 64 bits project files;
Affected files :
SpellChecker_wx30_64.cbp : line 58 => Attached patch tested successfully
SpellChecker_wx31_64.cbp : line 38 => Attached patch untested

[Teodor Petrov]

Thanks.