* build-aux/check-tcc.sh: Pass if no test directory found. * build-aux/check.sh.in (TINYCC_PREFIX): Rename from TCC_PREFIX. Pass if partial tests prerequisites fail.
* scaffold/tinycc/: Remove. * build-aux/check-mescc.sh: Remove tinycc testing. * build-aux/check-tcc.sh: New file. * build-aux/check.sh.in: Use it. * build-aux/config.sh: Update. * build-aux/export.make: Update.