Generate notes and groups for .text.hot and .text.unlikely sections.
    When -ffunction-sections is active, put notes for startup sections into .text.startup.foo rather than .text.foo.
    Similarly put exit section notes into .text.exit.foo.  (#1630574)
    Change annocheck's maybe result for GNU Property note being missing into a PASS if it is not needed and a FAIL if it is needed.