Add note and TODO into snow_overrides.R and forkcluster_overrides.R

com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/parallel/R/forkcluster_overrides.R

@@ -14,6 +14,8 @@
 #
 
 ## Derived from snow and parallel packages
+## Note: the same code is used in snow_overrides.R, reflect any updates in that file
+## TODO: get rid of this redundancy
 
 eval(expression({
 

com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/snow/R/snow_overrides.R

@@ -14,6 +14,8 @@
 #
 
 ## Derived from snow and parallel packages
+## Note: the same code is used in forkcluster_overrides.R, reflect any updates in that file
+## TODO: get rid of this redundancy
 
 eval(expression({