Fix initialization for precompilation
Fix initialization for precompilation

Still needs to ditch dependence on Cartesian _package_ on Julia 0.3 for this to work well.

benmoran/Images.jl,cdsousa/Images.jl,timholy/Images.jl,c42f/Images.jl,rened/Images.jl,zhmz90/Images.jl,zhmz90/Images.jl,angi2/Images.jl,angi2/Images.jl,JuliaPackageMirrors/Images.jl,twadleigh/Images.jl,benmoran/Images.jl,cdsousa/Images.jl,rened/Images.jl,c42f/Images.jl,twadleigh/Images.jl