Add setup_eunit rebar command

This adds a rebar plugin that introduces the setup_eunit function to
bootstrap the test ini files necessary to run the eunit test suite. It
grabs the ini template files from rel/overlay/*.ini primarily to be
able to set an absolute path for data directories and the prefix based
on the location of the CouchDB source directory.
Set the BUILDDIR environment variable for use in eunit tests
Disable problematic tests
TMP: use 1963-eunit-bigcouch branches
TMP: enable verbose eunit output
Add Benjamin Anderson for fixing COUCHDB-1133 in #7125820074
Fix NOTICE whitespace
Add NOTICE info for ?assertNotMatch macro
Merge remote-tracking branch 'origin/1963-eunit-bigcouch'
skip folsom test suite
fix makefile target dependencies
create couchjs where eunit expects it
remove lies
Revert "TMP: use 1963-eunit-bigcouch branches"

This reverts commit c7cf437e1845ceecde9eb0652963e0c145ad67e3.
Travis: Drop R15 build, add 17.1
Support passing in a complete URL for deps

closes #268
Make N value in dev/run configurable

This commit makes N (the number of development nodes spun up)
a command line option. It also fixes a magic number which was
preventing the value of N from changing the number of nodes
spun up.

Closes COUCHDB-2324
remove duplicate CSP section
Renamed AUTHORS to COMMITTERS
Add missing committers