revset: added _intlist method to replace _list for %ld
Now %ld expression goes through _intlist and doesn't do any unnecesary
processing anymore.
purge: avoid duplicate output for --print (
issue4092)
Now "hg purge -p" commands avoids printiing duplication of filenames.
Second patch is the test coverage of first patch which tells that '-p'
does not depend on whether ui.verbose is configured or not,that means it
is independent of '-v'.