* Added a TODO list item.
* Add .PHONY: install to Makefile, to help people with demented fs's.
* Darwin listed in INSTALL.
+ * New adnsheloex client courtesy of Tony Finch (and copyright notices
+ updated).
+ * Add documentation comment by definition of adns_r_ptr_raw type enum.
+ * Add -Wno-pointer-sign if GCC has that option.
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