I thought I had run the full test suite before the last checkin, but
obviously I didn't. test_multibytecodec_support.py isn't really a test file,
it is a support file that contains a base test class. Rename it to
multibytecodec_support so that regrtest test discovery doesn't think it is a
test file that should be run..
(cherry picked from commit 75d9aca97a)
requires them. Disable executable bits and shebang lines in test and
benchmark files in order to prevent using a random system python, and in
source files of modules which don't provide command line interface.
Serhiy Storchaka
Zachary Ware
Victor Stinner