Streamline postmortem analysis, and fix non-essential-test report being lost

It got eaten by lack of STDERR output after fixage from a4c52abc, GAH!
Add more autogenerated test exceptions, in fact do a carpetbomb

This is necessary at least for a while until the war on the user passes
Record notest install output as well
Really work around https://github.com/travis-ci/travis-ci/issues/1477

Just upgrade cpanm by hand with --dev
Forgotten remnant of 655d80dd (void by f207111d)
Fix exceedingly sloppy SQLite warning workaround from 04ab4eb1

The previous version managed not only to *not* silence any warning but also
break the test checking for lack of said warnings. In addition the silencing
regex was unacceptably broad, possibly missing some important misbinds.

riba pull your shit together man
Check that 64 bit in-SQLite math works regardless of ivsize

Expand on top of 04ab4eb1 and 579d1966, work inspired by charsbar's
https://github.com/charsbar/dbd-sqlite-authortests

Tested by passing the following on an old and recent DBI and a mix of ivsizes

for p in 5.8.1 5.8.2 5.8.3 5.8.5 5.18.0 5.18.1; do
  perlbrew switch $p
  for v in 1.29 1.31 1.33 1.35 1.37 1.39 1.40 ; do
    PERL_CPANM_OPT= cpanm -qn DBD::SQLite@$v && echo -n "$p " && perl -V:ivsize && prove -l t/752sqlite.t || break
  done
done

@mattp- now *that's* attention to detail :)