Fix issue with FieldtypeCache not working with the new Field export feature.
Fix issue with FieldtypeCache not working with the new Field export feature.

rusjoan/poly-hackaton,ryancramerdesign/ProcessWire,fezde/ProcessWire,rusjoan/poly-hackaton,fezde/ProcessWire,rusjoan/poly-hackaton,ryancramerdesign/ProcessWire,ryancramerdesign/ProcessWire,fezde/ProcessWire,rusjoan/poly-hackaton,rusjoan/poly-hackaton,fezde/ProcessWire,ryancramerdesign/ProcessWire,fezde/ProcessWire,ryancramerdesign/ProcessWire