Update qt readme to indicate Qt is now the primary GUI.

doc/readme-qt.rst

@@ -1,5 +1,5 @@
-Bitcoin-qt: Qt4 based GUI replacement for Bitcoin
+Bitcoin-qt: Qt4 GUI for Bitcoin
-=================================================
+===============================
 
 Features
 ========
@@ -150,7 +150,7 @@ Berkely DB version warning
 
 A warning for people using the *static binary* version of Bitcoin on a Linux/UNIX-ish system (tl;dr: **Berkely DB databases are not forward compatible**).
 
-The static binary version of Bitcoin is linked against libdb4.7 or libdb4.8 (see also `this Debian issue`_).
+The static binary version of Bitcoin is linked against libdb4.8 (see also `this Debian issue`_).
 
 Now the nasty thing is that databases from 5.X are not compatible with 4.X.