io: add function isDir

This function will check whether the given path is a directory.
io: add isFile

This function will check whether the given path is a regular file.
Adding spec entry for HeapSort
Fixing a typo; Adding a note about the reverse argument
Initial draft of associative implicit addition section for spec
Minor cleanup of README.curl

Make the lines 80 characters long.  Add an apostrophe to
(2) Bindings to libcurl's curl_easy_setopt and curl_easy_perform
First draft of CONTRIBUTORS file

This is based primarily on memory -- I may find additional changes
while completing the CHANGES file.
Minor edits to README.auxIO

Makes sure the lines are at most 80 columns long, removes a reference to the
non-existent README.lustre, and switches "no one" to "no individual" in the last
entry, as I believe it is clearer this way.  Everything else looks fine.
Add a README for the new file functions.
Update the man page and README.chplenv for release.

In README.chplenv, CHPL_MODULE_PATH was not mentioned, so I added an "Optionally ..."
section to cover it.  I also mention that "curl" is now a valid setting for
CHPL_AUX_FILESYS, and direct readers to technotes/README.curl for details.

Entries in the ENVIRONMENT section were alphabetized.  The descriptions were not altered
and none added nor deleted.
Back out reordering of ENVIRONMENT entries.
Update to reflect qthreads as the default tasking layer.
Snapshot of CHANGES so far (not far yet)
Adding a test that calls functions from different modules without using the module directly.
Merge pull request #501 from sungeunchoi/test

Add test for calling functions from a module with out using the module.

This test calls X.f() and Z.f() without using X (in same file) or Z (in different file).
Checkpoint of the STATUS file.

This should include all outstanding futures.

TODO: Add any items that are in the REGRESSIONS or TRIAGE files.
Merge pull request #502 from sungeunchoi/test

Checkpoint of the STATUS file.

This should include all outstanding futures (bug/unimplemented features/performance).

TODO: Add any items that are in the REGRESSIONS or TRIAGE files.
Added tests to test/studies/colostate. include our Jacobi-2 and 3-D tests of tiling, naive parallel and serial
Mild change to header
Taking a breather