Squashed commit of the following:

commit c334e8ec38a0900dd947e5abb44ce02d8d790a5c
Author: Torsten Bögershausen <tboegi@web.de>
Date:   Thu Oct 9 06:19:27 2014 +0200

    Silence the "if type wget"

    The output of the  "type wget" command may confuse the user, silence it

commit ab8739d1c5fcd9cef981b54251c3db2b3fe9d6ed
Author: Torsten Bögershausen <tboegi@web.de>
Date:   Sat Aug 23 16:49:24 2014 +0200

    When wget is not available, try curl

    Mac OS X 10.9 has curl under /usr/bin/curl, but wget is not installed by default.
    (some people install it seperately, e.g. via Mac Ports or Fink),
    so try to use curl when wget is not installed

commit 2d9153550309aa7fab5c57caeab1710cdf1cc066
Author: Torsten Bögershausen <tboegi@web.de>
Date:   Tue Aug 12 17:30:01 2014 +0200

    HOME_EPICS_APPS without  ../

    When the user installing EPICS has not his $HOME public-read,
    the path /home/user/../epics can not be resolved by other users.
    Solution:
    Replace "/home/user/../epics" with "/home/epics". After doing that,
    show the new path to the user, and ask if EPICS should be installed.

    Create /usr/local when needed:
    Some systems (like Mac OS X) do not have the directory /usr/local/,
    so create it when missing.