ssl: resolve symlink before checking for Apple python executable (issue4588) test-https.t was broken at 07fafcd4bc74 if /usr/bin/pythonX.Y is used on Mac OS X. If python executable is not named as "python", run-tests.py creates a symlink and hghave uses it. On the other hand, the installed hg executable knows the real path to the system Python. Therefore, there was an inconsistency that hghave said it was not an Apple python but hg knew it was.