syncqt:  Fix regexp capturing class names of partial specialisation

Example with this code:
"template <class Key> struct QHashNode<Key, QHashDummyValue> {"

The previous regexp would take "QHashNode<Key," as some keyword,
and "QHashDummyValue>" as the class name.  By forbidding '<' in the
keyword, we avoid such mistake

Change-Id: I5d5077b9e5e764e91899bcaef137d99214ea5d63
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Remove QHashDummyNode and avoid undifined behavior

A lot of code in QHash is doing casting to QHashNode while the pointer
may be of type QHashDummyNode.  This is a lot of undefined behavior.
Remove QHashDummyNode and specialize QHashNode for QHashDummyValue instead.
QHashDummyValue is the only type for which QTypeInfo::isDummy is true.
Q_DUMMY and QTypeInfo::isDummy are internal API, so is QHashDummyNode, so
we can remove them.

Task-number: QTBUG-40029
Change-Id: I60c2ff0933075b9202bde89a9992746052f75133
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Improve debug output of QPalette.

Task-number: QTBUG-39997
Change-Id: I25b8ce8791c25c7ef7b97270ec50dad45fbdfecd
Reviewed-by: Shawn Rutledge <shawn.rutledge@digia.com>
Update platformheaders docs about bc.

Remove the "As of Qt 5.4" to avoid misunderstandings.
Also add the note for the classes that miss it.

Change-Id: Id7f437954bb3ec12c0fc944c18e58e6e977863f1
Reviewed-by: Jørgen Lind <jorgen.lind@digia.com>