Initial port to Qt5.  Support for Qt4 API is maintained via preprocessor directives.
Added post install routine calling install_name_tool to change the id of the kqoauth framework bundle.

This allows the an application linked with kqoauth to be run without setting DYLD_LIBRARY_PATH on the development machine.
Emit authorizedRequestReady() instead of a requestReady() signal if the
QNetworkReply was originally generated from a call to executeAuthorizedRequest().
Merge commit 'refs/merge-requests/11' of git://gitorious.org/kqoauth/kqoauth into merge-requests/11