Install databaseModuleDirs.pm into bin/<host>

Adjust all scripts to use it from there.
Host arch's may use different absolute paths to the same Base directory,
so they can't share a single copy of that module.

src/tools/dbdToMenuH.pl

@@ -8,8 +8,9 @@
 #*************************************************************************
 
 use FindBin qw($Bin);
-use lib "$Bin/../../lib/perl";
+use lib ($Bin, "$Bin/../../lib/perl");
 use databaseModuleDirs;
+no lib $Bin;
 
 use EPICS::Getopts;
 use File::Basename;