Initial set functionality support for associative arrays and domains
Simple tests for set features
Splitting tests into appropriate directories
op= set support for associative arrays
op= tests for associative arrays and domains
Simple subset test
Simplify 'proc -' for domains as sets
Merge branch 'master' of github.com:chapel-lang/chapel into sets
Making domainSetOps.chpl validate itself instead of matching some text output
Removing text output as assertions are sufficient for validation
Improving reliability of arraySetOps test
Adding version of subset to produce compiler error when used with incompatible type
Enforcing 1:1 domain:array relationship for op= set operations on arrays
Adding comment blocks describing set operations
Parallelizing set operations when possible
Adding new quickstart versions of setchplenv.*

These versions are identical to the ones in util except that
they also set...

CHPL_TASKS  = fifo (to avoid the default of qthreads)
CHPL_GMP    = none (to avoid a speculative build of gmp in the future)
CHPL_REGEXP = none (to avoid a speculative build of regexp in the future)
Updated README to reflect new "Quick Start" workflow and refer to PERFORMANCE

The main change here is to swap steps 2 and 3.  The reason we did the
make before the environment previously was so that (a) because we
could (and it validated that the make worked without any specific
settings) and (b) one could say "You only need to do steps 3 onward
once the initial build has been done" (though the insertion of the
make check step arguably broke this as well).

Added two new steps at the end of the Quick Start list, one that tells
how to build the preferred configuration; a second that points to the
PERFORMANCE file in hopes of avoiding the dreaded --fast question.
Updating test release script to match quick start instructions

To make testReleaseHelp track the changes I just made to the
top-level README and quick start instructions, it now

a) sets the environment before issuing the make command
b) sets the environment using the util/quickstart/setchplenv.* script
   rather than the util/setchplenv.* script

Further TODOs:

* rewrite this from csh to bash so that we're testing the shell we
  consider most common now

* make this also test the non-quickstart case to make sure it works
  too.
Adding the util/quickstart/ directory to those to be included in the release
Merge pull request #277 from ronawho/qthreads-timeouts

Revert "Turn on warnings for nightly for tests that took > 60 seconds to execute"

This reverts commit 097345ca7ca48592b97b73d9cec4b5643a1ab871.

I got the results I wanted, turning this off now.