add changes-5.0.0 file to document source incompatible changes

Change-Id: Ia513f6f1d4f0654912507d0b7cbb5a57d0470b7e
Reviewed-on: http://codereview.qt.nokia.com/800
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Olivier Goffart <olivier.goffart@nokia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@nokia.com>

dist/changes-5.0.0

@@ -0,0 +1,128 @@
+Some of the changes listed in this file include issue tracking numbers
+corresponding to tasks in the Qt Bug Tracker:
+
+  http://bugreports.qt.nokia.com/
+
+Each of these identifiers can be entered in the bug tracker to obtain more
+information about a particular change.
+
+
+****************************************************************************
+*                       Source incompatible changes                        *
+****************************************************************************
+
+- QSslCertificate::subjectInfo() and QSslCertificate::issuerInfo() now
+  return a QStringList instead of a QString
+
+
+****************************************************************************
+*                           General                                        *
+****************************************************************************
+
+General Improvements
+--------------------
+
+-
+
+Third party components
+----------------------
+
+-
+
+
+****************************************************************************
+*                          Library                                         *
+****************************************************************************
+
+QtCore
+------
+
+QtGui
+-----
+
+QtNetwork
+---------
+
+QtOpenGL
+--------
+
+QtScript
+--------
+
+
+****************************************************************************
+*                          Database Drivers                                *
+****************************************************************************
+
+
+****************************************************************************
+*                      Platform Specific Changes                           *
+****************************************************************************
+
+Qt for Linux/X11
+----------------
+
+
+Qt for Windows
+--------------
+
+
+Qt for Mac OS X
+---------------
+
+
+Qt for Embedded Linux
+---------------------
+
+
+Qt for Windows CE
+-----------------
+
+
+****************************************************************************
+*                      Compiler Specific Changes                           *
+****************************************************************************
+
+
+****************************************************************************
+*                          Tools                                           *
+****************************************************************************
+
+- Build System
+
+- Assistant
+
+- Designer
+
+- Linguist
+
+- rcc
+
+
+- moc
+
+
+- uic
+
+
+- uic3
+
+
+- qmake
+
+
+- configure
+
+
+- qtconfig
+
+
+****************************************************************************
+*                          Plugins                                         *
+****************************************************************************
+
+
+****************************************************************************
+*                   Important Behavior Changes                             *
+****************************************************************************
+