perl-native: Switch to userelocatableinc and not shared libperl

perl-native: Switch to userelocatableinc and not shared libperl

While in here, we didn't use db nor gdbm so remove those as deps.
This recipe is safe with no other deps so add INHIBIT_DEFAULT_DEPS
and switch to patch as PATCHTOOL.  Being relocatable means we don't need
the config.sh mangling we had been doing and we want to be more clear
about our mangling of scripts to use /usr/bin/env perl

Acked-by: Koen Kooi <koen@openembedded.org>
Acked-by: Martin Jansa <Martin.Jansa@gmail.com>
Signed-off-by: Tom Rini <tom_rini@mentor.com>