tweak ordering of default paths for nytprofhtml

cpantesters is showing failures of the form:

  Profile data created by incompatible perl config (NV size 16 but ours is 8)
  at /usr/lib/x86_64-linux-gnu/perl5/5.20/Devel/NYTProf/Data.pm line 87.

if you look at the path it is actually using a different path to the
perl running the tests:

  /home/sand/src/perl/repoperls/installed-perls/perl/v5.18.4/127e/bin/perl

so calling File::Which::which is giving us the *system* perl's
nytprofhtml path. switch the ordering of defaults to first use the
nytprofhtml that will be in the same path as the perl running the
tests/code so we don't end up getting a potentially incompatible
system perl

bump version to 0.12