These tests fail on master, so it's not a regression. Changes in #4874
(parent commit) seem to work (and pass most CI), so skipping these tests
is better than blocking the changes.
In Windows Lua's os.tmpname() returns relative paths starting with \s,
prepend them with $TEMP to generate a valid path.
In OS X os.tmpname() returns paths in '/tmp' but they should be in
'/private/tmp'. We cannot use os_name() for platform detection because
some tests use tempname() before nvim is spawned, instead use one of the
following:
1. Set SYSTEM_NAME environment variable before calling the tests, it
is set from CMAKE_SYSTEM_NAME(i.e. uname -s or 'Windows')
2. Call uname -s
3. Assume windows
Temporary change to avoid frequent hangs on Travis macOS/OSX builds.
Hang does not occur on Quickbuild OSX (Yosemite) build.
Reverting e9061117a5 avoids the hang, but causes
more serious regressions on many more systems.
Note that the job_spec hang only happens with the gcc-4.9 Travis OSX build.
References #5002
References #5029
