Do not compile nodetool escript

This removes the dependency on lib/compiler in an OTP release.
Handle ct_run exit codes in R15B02 and later

Since R15B02, ct_run returns a non-zero exit code when some tests
failed or were auto-skipped. (See ticket OTP-9865.)

This fix makes it so a non-0 code doesn't cause an instant failure, but
still prompts for log verification before doing so. Given the behaviour
was acceptable for pre-R15B02, it should be valid with it with
post-R15B02.

The fix should also be backwards compatible.
Merge pull request #80 from tuncer/nodetool-no_compile

Do not compile nodetool escript
Enable verbose output from retest
Add author to fix issue when compiling on travis
Further investigation into travis CI issues
Adding user/email on created repos for travis CI
Additional travisci fixes
Adding R16B to travis build
Merge pull request #83 from rebar/travisci-fixes

Travisci fixes
Add rebar-deps env to port compiler SharedEnv

REBAR_DEPS_DIR is often needed when a nif needs to be linked with a raw
dependency.
Merge pull request #85 from ratelle/rebar-deps-dir-in-port-compiler

Add rebar-deps env to port compiler SharedEnv
Merge branch 'master' of git://github.com/ferd/rebar into ferd-master
Fix searching for plugins

If a plugin is in a dependency, rebar didn't search for it carefully
enough.
Merge pull request #90 from Motiejus/dep_plugin

Fix searching for plugins