c-ares version 1.11.0

Changes:

 o Add a unit test suite.
 o Allow builds with code converage with --enable-code-coverage configure option.
 o Allow library-wide override of malloc/free.
 o Allow multiple -s options to the ahost command.

Bug fixes:

 o

Thanks go to these friendly people for their efforts and contributions:

 David Drysdale

Have fun!