Update version number to 3.4.0-RC3
Update version number to 3.4.0-RC3

tenkoma/cakephp,petteyg/cakephp,ndm2/cakephp,ADmad/cakephp,CakeDC/cakephp,davidyell/cakephp,ADmad/cakephp,garethellis36/cakephp,davidyell/cakephp,petteyg/cakephp,davidyell/cakephp,cakephp/cakephp,dakota/cakephp,dakota/cakephp,CakeDC/cakephp,petteyg/cakephp,CakeDC/cakephp,ndm2/cakephp,tenkoma/cakephp,dakota/cakephp,cakephp/cakephp,cakephp/cakephp,mvdriel/cakephp,mvdriel/cakephp,tenkoma/cakephp,ndm2/cakephp,cakephp/cakephp,berrygoudswaard/cakephp,mvdriel/cakephp,mvdriel/cakephp,petteyg/cakephp,CakeDC/cakephp,garethellis36/cakephp,dakota/cakephp,garethellis36/cakephp,ADmad/cakephp,ndm2/cakephp,tenkoma/cakephp,berrygoudswaard/cakephp,garethellis36/cakephp,berrygoudswaard/cakephp,ADmad/cakephp