Provide uniform isXxx functions in the standard modules.
Bug fix/workaround for sync/single args; minor reformatting in ChapelSyncvar.chpl
Oops, shouldn't have committed this on master
First stab at directory-only walker
Adding .compopts and .good files for new walk.chpl test
Changing to using stat to get a more portable implementation of listdir and walk
Merge branch 'master' of https://github.com/chapel-lang/chapel into filerator
Oops, forgot to add this to previous commit
Snapshot of a first-draft Filerator module

(Sadly it does not work)
This filerator now does work -- using a module in an iterator broke it apparently

Not sure why, but somehow the use of a helper module to get my externs
didn't work in the original filerator
SImplified versions of tests that now use the Filerator module

(Oh, and they also move 'sorter()' out to the Sort module)
Merge branch 'master' of https://github.com/chapel-lang/chapel into filerator
Merge branch 'master' of https://github.com/chapel-lang/chapel into filerator
Merge branch 'master' of https://github.com/chapel-lang/chapel into filerator
Merge branch 'filerator' of https://github.com/bradcray/chapel into filerator
Added sorting capability for filerator
Rewrote tests to do sorting more properly
Merge branch 'sorterator' of https://github.com/bradcray/chapel into filerator

Conflicts:
	test/studies/filerator/walk.chpl
Added more execopts variations to my walk test

Changed the default startdir to "." also.
Fixing bottom-up walkdir()

It turns out that my previous version of walkdir() had a bug
in the recursion which only showed up in the bottom-up case
which somehow escaped me in my previous commit.  This fixes
it by breaking the listdir() capability out into its own routine.