Add poppler_document_build_dests_tree() to glib frontend

Builds named destinations balanced binary tree in document.
4 jobs from add-named-dest-tree in 16 minutes and 44 seconds (queued for 19 seconds)
Status Job ID Name Coverage
  Build
passed #41876
build

00:07:55

passed #41877
build_clang_libcpp

00:08:02

passed #41878
build_gcc_49

00:08:46

passed #41879
build_mingw64_fedora

00:03:48