Delete the current test config naming code in nightly, and support CHPL_NIGHTLY_TEST_CONFIG_NAME env var.
oc email formatting...
Make it clear not setting test config name is an error.
Add "Tests run:" section to nightly cron emails.
Add CHPL_NIGHTLY_TEST_CONFIG_NAME to all util/cron/test*.bash scripts.
Correctly handle CHPL_NIGHTLY_TEST_DIRS.
Include printchplenv output at end of cron emails.
Rename whitebox testing scripts.
Add new test config names for whitebox testing.
Remove logdir variations of Nightly* (except NightlyPerformance) from common and test-*.bash scripts.
Revert memleaks logdir removal.

Memleaks is special and may have issues if moved to /data/sea/chapel/Nightly...
Revert "Rename whitebox testing scripts."

This reverts commit 529de4ec0fb73111c44bc75c0b53c1a9498133d0.
remove fixmes
Source common-gasnet.bash in dist- test scripts.

I removed common-dists.bash, but did not add the common-gasnet sourcing to the
test scripts. Good catch by the reviewer, @ronawho.
Merge pull request #647 from thomasvandoren/test-config-rename

Test config rename

Update automated nightly testing to use new logfile names and email content
based on human readable configuration tags (as opposed to the unwieldly system
previously used). The new system requires an environment variable,
`CHPL_NIGHTLY_TEST_CONFIG_NAME`, which is used for both the log filename and in
the email subject line. All tests scripts set this variable before calling
nightly.

This value of this variable is unrestricted, at least from
`util/cron/nightly`'s perspective. The team has agreed upon a simple naming
scheme that relies on good judgement and simplicity.

In addition, the nightly emails now include a "Tests run:" section in the
header, which highlights the test directories that were passed to
start_test. This will be empty when the "full suite" of tests is run. The
output of `printchplenv --debug` is also appended to the bottom of the email.

In order to support "Tests run:" in general, a new environment variable,
`CHPL_NIGHTLY_TEST_DIRS`, is supported by nightly. When set, the directories in
that variable will be added to the start_test call. It works with or without
other flags, like `-examples` or `-multilocale`. See the LLVM test scripts for
an example usage.