Remove PDF outline exports that do not exist

See merge request !1

Raymond S Brand authored Oct 31, 2020 and Torsten Schönfeld committed Nov 08, 2020

Also add an example to exercise the new bindings.

Raymond S Brand authored Oct 31, 2020 and Torsten Schönfeld committed Nov 08, 2020

Followup to a4c8f7d7.

CPAN testers results indicate that dynamically loading libpthread.so is
not supported on NetBSD either.

intrigeri authored May 04, 2015 and Torsten Schönfeld committed Aug 24, 2015

https://bugzilla.gnome.org/show_bug.cgi?id=748911

On OpenBSD, any program that directly or indirectly wants to load libpthread.so
must do so from the start.  But when perl is built without ithreads, it will
also most likely not be compiled with "-pthread".  When libglib/libgobject then
go and try to load libpthread.so, the loader will error out.

Fix by setting LD_PRELOAD=libpthread.so at the relevant points in the build and
test process.

The ExtUtils::MakeMaker version shipped with perl <= 5.14 does not seem to
handle references in the meta information correctly.

Due to the switch to the META spec version 2, we also need to change the way we
specify our dependencies.

- changed 'exact' to 'full' for the license reference

- %meta_merge is used to pass META_MERGE values to EU::MM and
  CPAN::Meta; these populate META.[yml|json] and MYMETA.[yml|json]
- Moved AUTHOR and LICENSE fields into %meta_merge
- CPAN::Meta::Spec explains fields and their allowed values
  (https://metacpan.org/module/CPAN::Meta::Spec)