Consistent character/byte hygene allows RT to run with DBD::Pg 3.3.0

This does require a version dump of the DBIx::SearchBuilder dependency
for PostgreSQL installs, as DBIx::SearchBuilder previous to that version
manually forced the "UTF8" off on all bound values before executing
statements.  When the character/byte distinction has been intentionally
made, manually (and unpredictably) applying an additional layer of UTF-8
encoding is incorrect.

sbin/rt-test-dependencies.in

@@ -327,6 +327,7 @@ DBD::Oracle
 .
 
 $deps{'PG'} = [ text_to_hash( << '.') ];
+DBIx::SearchBuilder 1.66
 DBD::Pg 1.43
 .
 
@@ -378,7 +379,6 @@ Pod::Simple 3.24
 
 my %AVOID = (
     'DBD::Oracle' => [qw(1.23)],
-    'DBD::Pg' => [qw(3.3.0)],
     'Devel::StackTrace' => [qw(1.28 1.29)],
 );