Update fipsalgtest.pl to cope with changes in file names and format

X9.31 tests need to look in files for '9.31'
RSA-PSS tests may contain additonal text as well as "salt len: n".
We now just look at the start of a filename for a match.

Separate ECDSA2 test list.

Reorder test to handle new formats: for example PQGVer for DSA2 can be
detected based on file format but if this fails revert to PQGVER.

For future debugging add a --debug-detect option which prints out more
details of the test detection including the first few lines of each
request file.
Reviewed-by: Tim Hudson <tjh@openssl.org>
Reviewed-by: Steve Marquess <marquess@openssl.org>