Fix make.conf WITH_PKGNG=yes content to handle \n
Fix make.conf WITH_PKGNG=yes content to handle \n

Using single quotes with \n will write this escape character into the
file, using double quotes will correctly write the newline into the
file.

skoef/puppet-pkgng,icann-dns/puppet-pkgng,xaque208/puppet-pkgng,icann-dns/puppet-pkgng,xaque208/puppet-pkgng,xaque208/puppet-pkgng,icann-dns/puppet-pkgng,skoef/puppet-pkgng