[WPS4R] Read scripts from symbolic links

[ridoo]

It would be nice to link R scripts laying in ${wps_install}/R/scripts via symbolic links (created with ln -s <source-path> <link-target). Currently the WPS fails with message:

ERROR org.n52.wps.server.request.ExecuteRequestV100: Exception/Error while executing ExecuteRequest for org.n52.wps.server.r.arima: org.n52.wps.server.ExceptionReport: Could not read script file <path-to-symbolic-link>

[bpross-52n]

Hi ridoo. Thanks for this, I will have a look into it.