Adjust 403.gcc/450.soplex for v1.2

Some misc. fixes made after 1.0.1 require changes to the input file names for
403.gcc (and thus also the output hash) and the output for 450.soplex. Try to
pick up the benchmark version and use that as the reference key when available
(and when the reference key is not already set). This should allow the test
suite to use v1.2 without breaking the system for currently-happy users of
older versions.


git-svn-id: https://llvm.org/svn/llvm-project/test-suite/trunk@220454 91177308-0d34-0410-b5e6-96231b3b80d8