wxwidgets: rename to wxQt, move to dev-qt directory.

This matches the Linux packaging styles of naming the wx packages
according to the backend it's compiled with (e.g. wxGTK).

dev-qt/wxqt/patches/wxwidgets-sckaddr.patch

@@ -0,0 +1,28 @@
+From 006dc02277d977d13a67f31a1c5fbb3f2e155cb9 Mon Sep 17 00:00:00 2001
+From: Augustin Cavalier <waddlesplash@gmail.com>
+Date: Sun, 12 Feb 2017 15:40:59 -0500
+Subject: [PATCH] sckaddr: Fix build on Haiku.
+
+---
+ src/common/sckaddr.cpp | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/src/common/sckaddr.cpp b/src/common/sckaddr.cpp
+index 0388132..49a6481 100644
+--- a/src/common/sckaddr.cpp
++++ b/src/common/sckaddr.cpp
+@@ -109,6 +109,11 @@ wxIMPLEMENT_DYNAMIC_CLASS(wxUNIXaddress, wxSockAddress);
+     #endif
+ #endif // __WINDOWS__
+ 
++#ifdef __HAIKU__
++    #define HAVE_GETHOSTBYNAME
++    #define HAVE_GETSERVBYNAME
++#endif
++
+ // we assume that we have gethostbyaddr_r() if and only if we have
+ // gethostbyname_r() and that it uses the similar conventions to it (see
+ // comment in configure)
+-- 
+2.7.0
+