Wrapper for Julia 0.3

[JonWel]

The current Julia wrapper is only compatible for Julia 0.4 (development version), and not compatible with Julia 0.3.
The only difference is that they changed the way to write the unsigned integer.
The old way was Uint and the new way is UInt. So while the new way should be kept for Julia 4, it would be interesting to have a version of the wrapper compatible with the current Julia release.

I tested this on Ubuntu 14.10 64bit and Julia 0.3.5 and the PropsSI function worked fine:

module CoolProp

export F2K, HAPropsSI, PropsSI, PhaseSI

function F2K(TF::Float64)
  return ccall( (:F2K, "CoolProp"), Cdouble, (Cdouble,), TF)
end

function HAPropsSI(Output::String, Name1::String, Value1::Float64, Name2::String, Value2::Float64, Name3::String, Value3::Float64)
  return ccall( (:HAPropsSI, "CoolProp"), Cdouble, (Ptr{Uint8},Ptr{Uint8},Float64,Ptr{Uint8},Float64,Ptr{Uint8},Float64), Output,Name1,Value1,Name2,Value2,Name3,Value3)
end

function PropsSI(Output::String, Name1::String, Value1::Float64, Name2::String, Value2::Float64, Fluid::String)
  return ccall( (:PropsSI, "CoolProp"), Cdouble, (Ptr{Uint8},Ptr{Uint8},Float64,Ptr{Uint8},Float64,Ptr{Uint8}), Output,Name1,Value1,Name2,Value2,Fluid)
end

function PhaseSI(Name1::String, Value1::Float64, Name2::String, Value2::Float64, Fluid::String)
  outstring = Array(Uint8, 255)
  val = ccall( (:PhaseSI, "CoolProp"), Int32, (Ptr{Uint8},Float64,Ptr{Uint8},Float64,Ptr{Uint8}, Ptr{Uint8}, Int), Name1,Value1,Name2,Value2,Fluid,outstring,length(outstring))
  return bytestring(convert(Ptr{Uint8}, outstring))
end

end #module

(I only changed the UInt8 by Uint8)

[jowr]

Yes, that is also what was recommended here. Maybe we should add it to the docs...
#447 (comment)