[PATCH] testsuite: add coverage for vendor-clobbering

While reimplementing config.sub for use in a situation where no bash interpreter was available, I discovered several oddities about config.sub's behavior. One such oddity was the fact that an explicitly-provided vendor will be clobbered by the inferred vendor for three cpu types: microblaze, s390,

[PATCH] testsuite: add coverage for vendor-clobbering

While reimplementing config.sub for use in a situation where no bash interpreter was available, I discovered several oddities about config.sub's behavior. One such oddity was the fact that an explicitly-provided vendor will be clobbered by the inferred vendor for three cpu types: microblaze, s390,