don't override dir() in qa rpc tests
don't override dir() in qa rpc tests

Replace "dir" with "dirname" in util.py in qa/rpc-tests/ because "dir"
is the name of a function in python.

(cherry picked from commit a7af9839d688bee9b0b15add61259140b3c00014)

# Conflicts:
#	qa/rpc-tests/util.py

reddcoin-project/reddcoin,reddcoin-project/reddcoin,reddcoin-project/reddcoin,reddcoin-project/reddcoin,reddcoin-project/reddcoin,reddcoin-project/reddcoin