creates data tree handle on pinboard with given content. This has to be used to create the input files on the pinboard needed by JCMSolve.
int JCMSetDataTreeHandle(int* handle, const char* content, const char* fileName)
|handle||output||handle of created data tree object|
|content||input||tree content. This should have the same JCM syntax as a usual input file on hard drive|
|fileName||input||file path, under which the data tree object should be located on the pinboard|