Log Message:
Update to Qt 3.0.6, change PKGLIBTOOL to LIBTOOL in one place and do a bit of
PLIST sorting.

Qt 3.0.6 is a bugfix release. It maintains both forward and backward
compatibility (source and binary) with Qt 3.0.5

Binary compatibility warning: Qt 3.0.6 is backward and forward binary compatible
with Qt 3.0.5, and is planned to be binary compatible with Qt 3.1. Unfortunately
Qt 3.0.5 is not 100% backward binary compatible with Qt 3.0.3 (a class got a few
bytes smaller), meaning executables compiled with 3.0.5 may not run properly
when linked dynamically to 3.0.3. at runtime. Note that this is not a problem on
MS-Windows. Due to its wide distributed in various GNU/Linux distributions, we
have decided to stick with 3.0.5's ABI. If you ship dynamically linked
executables, we suggest putting a QT_REQUIRE_VERSION macro at the beginning of
your main function:

   ...
   #include <qmessagebox.h>
   ...
   int main( int argc, char**argv )
   {
       QT_REQUIRE_VERSION( argc, argv, "3.0.5" )
       ...
   }

The macro will show a message box with a warning message and then abort the
application gracefully with exit(1).

For a full buglist see the Trolltech web site.