HAVE_POPPLER_ANNOT_WRITE
0.19.4 solves bug 49080, which potentially corrupts PDF files.

HAVE_POPPLER_FIND_OPTS
0.22 PopplerFindFlags
0.22 poppler_page_find_text_with_options

HAVE_POPPLER_ANNOT_SET_RECT
0.26 Adds function poppler_annot_set_rectangle

HAVE_POPPLER_ANNOT_MARKUP
0.26 poppler_annot_text_markup_new_{highlight,squiggly,strikeout,underline}