updated for plugin-system in Qt5.
polish code
imports test files.
fix a bug of plugin loading
fix a bug of plugin loading on Qt5
updated installer for Windows.
fix a bug of configure execution in a spaced path.
updated ChangeLog.
add a version string, Mac OS X 10.9 Mavericks
rename files of sql-drivers for windows.
changed sql-driver installer and the directory structure
modified to use Tf::currentDateTimeSec().
Merge branch 'master' of github.com:treefrogframework/treefrog-framework
implements getUTCTimeString() and Tf::currentDateTimeSec() in windows.
add EINTR_LOOP for accept4()
Use QSharedDataPointer class in THttpRequest clsss.
update version strings.
changed menber variable names
fix a bug of specifing thread ID on logging.
HTTP pipeline support.