Add complete list of deprecated GTK API's (as of GTK 2.14.7).

Add complete list of deprecated GTK API's (as of GTK 2.14.7).
 Group 'deprecated-gtk' lists all deprecated GTK APIs which
  are not currently used in Wireshark.
  -g deprecated-gtk will 'Error';

 Group 'deprecated-gtk-todo' lists the deprecated GTK APIs
  which are still used in Wireshark (ie: not yet fixed).
  -g deprecated-gtk-todo will 'Warn'.

Also: two new options added:
 -M: -g output is one line per function per file;
 -s summary-group: gives a count of the usage of each function in that group
    [currently: any group used in -s must also be specified with -g option].

git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@27729 f5534014-38df-0310-8fa8-9805f1628bb7