* adnstest: setvbuf(stdout,...) before we do first output.
* Cope with compilers that don't do `inline'.
* Add and fix various missing system #includes.
+ * Find install-sh properly when we need to use it, and chmod it +x.
* Do not use variadic macro, use stdarg instead (adnslogres.c).
* Regression tests work even if some syscalls are already macros.
* #include "config.h" before "adns.h".