fixed problem with MakeFunctionPlugin testing - does not work unless include/ directory is found.
fixed problem with MakeFunctionPlugin testing - does not work unless
include/ directory is found.

martanoga/yacas,tomaszkrysiuk/yacas,tomaszkrysiuk/yacas,grzegorzmazur/yacas,grzegorzmazur/yacas,martanoga/yacas,qwert2003/yacas,MateuszSnamina/yacas,MateuszSnamina/yacas,martanoga/yacas,martanoga/yacas,martanoga/yacas,grzegorzmazur/yacas,grzegorzmazur/yacas,tomaszkrysiuk/yacas,MateuszSnamina/yacas,grzegorzmazur/yacas,martanoga/yacas,tomaszkrysiuk/yacas,qwert2003/yacas,qwert2003/yacas,qwert2003/yacas,MateuszSnamina/yacas,qwert2003/yacas,MateuszSnamina/yacas,grzegorzmazur/yacas,grzegorzmazur/yacas,qwert2003/yacas,MateuszSnamina/yacas,tomaszkrysiuk/yacas,martanoga/yacas,MateuszSnamina/yacas,tomaszkrysiuk/yacas,qwert2003/yacas,tomaszkrysiuk/yacas