lit: Add '-a' option to display commands+output of all tests

The existing -v option only displays commands and outputs for failed
tests, the newly introduced -a displays it for all executed tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251806 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed