1 correct rjulia.R julia_init error
2 correct disablegc always true
3 add options for julia's uint64 int64 uint32 translate to R. 1) translate to double 2) translate depend julia's object value,if all values in int32 range ,it will trans to integer, or it will translate to double. now default is 2.
Merge branch 'master' of https://github.com/armgong/RJulia