refactor to deal with it. The "SYMLINKS" prerequisite is currently
excluded as so much relies on it, but this might change in the future.
-GIT_TEST_GETTEXT_POISON=<boolean> turns all strings marked for
-translation into gibberish if true. Used for spotting those tests that
-need to be marked with a C_LOCALE_OUTPUT prerequisite when adding more
-strings for translation. See "Testing marked strings" in po/README for
-details.
-
GIT_TEST_SPLIT_INDEX=<boolean> forces split-index mode on the whole
test suite. Accept any boolean values that are accepted by git-config.