compiler complaint + remove check

git-svn-id: http://fritzing.googlecode.com/svn/trunk@6878 85f94c43-f63a-0410-9d22-21439860c375
png export patch from jerome

git-svn-id: http://fritzing.googlecode.com/svn/trunk@6879 85f94c43-f63a-0410-9d22-21439860c375
sticky was being forgotten

git-svn-id: http://fritzing.googlecode.com/svn/trunk@6880 85f94c43-f63a-0410-9d22-21439860c375