Translate name from 'sunos' to 'solaris' as $JAVA_HOME/include/solaris has to be used rather than $JAVA_HOME/include/sunos

clean up sourceSection assignment for function body/stmts nodes; instrument all wrappers with source

Temporary override for Sys.time function since we do not handle POSIXct and POSIXlt objects at the moment.

new PrintErrorStackTracesToFile option, store verbose stack traces for RError and RInternalError, log verbose stack traces to disk by default