Add do_once macro
Feature

* Add BSettingsNode setDefaultValue and defaultValue methods
* Add BSettingsNode setUserGetFunction and userGetUnction methods
Export friend operators
Feature

* Add SslServer enum to BGenericServer
* Improve BGenericServer SSL connection handling
* Add SslHandlingMode enum to BNetworkServer
* Add setSslEncriptionWaitTimeout and sslEncriptionWaitTimeout methods to BNetworkServer
* Add setSslHandlingMode ande sslHandlingMode methods to BNetworkServer
* Handle SSL connections properly in BNetworkServer
Feature

* Add ability to handle BHelpBrowser links
* Add setUserUrlHandlerFunction and userUrlHandlerFunction methods to BHelpBrowser
Fix; feature

* Track stdin echo mode
* Add BTerminal::stdinEchoEnabled method
Feature

Add BApplicationBase::pluginWrapper and BPluginWrapper::pluginWrapper methods
Feature

Add setDockWidgetsAutoTabificationEnabled and tabifyDockWidgets functions to BGuiTools
Feature

* Add readPropertiesFile and writePropertiesFile functions to BDirTools
* Add propertiesFromString and propertiesToString functions to BeQt
Update version; update ChangeLogs
BeQt v4.1.0

BeQtCore:

* Add do_once macro
* Revert to previously used stdin echo mode after calling BTerminal::readLineSecure method
* Add BTerminal::stdinEchoEnabled method
* Add BSettingsNode setDefaultValue and defaultValue methods
* Add BSettingsNode setUserGetFunction and userGetUnction methods
* Add BApplicationBase::pluginWrapper and BPluginWrapper::pluginWrapper methods
* Add readPropertiesFile and writePropertiesFile functions to BDirTools
* Add propertiesFromString and propertiesToString functions to BeQt

BeQtNetwork:

* Add SslServer member to BGenericServer::ServerType enum
* Improve BGenericServer SSL connection handling
* Add SslHandlingMode enum to BNetworkServer
* Add setSslEncriptionWaitTimeout and sslEncriptionWaitTimeout methods to BNetworkServer
* Add setSslHandlingMode and sslHandlingMode methods to BNetworkServer
* Handle SSL connections properly in BNetworkServer

BeQtWidgets:

* Add setDockWidgetsAutoTabificationEnabled and tabifyDockWidgets functions to BGuiTools
* Add ability to handle BHelpBrowser links
* Add setUserUrlHandlerFunction and userUrlHandlerFunction methods to BHelpBrowser

Misc:

* Export friend operators