update r-release in GLCI to 3.6
update r-release in GLCI to 3.6

Rdatatable/data.table,vlulla/data.table,jangorecki/data.table,jangorecki/data.table,jangorecki/data.table,vlulla/data.table,Rdatatable/data.table,Rdatatable/data.table,jangorecki/data.table,vlulla/data.table,Rdatatable/data.table,vlulla/data.table