#11 Build for Windows with Visual Studio

[hgysin]

Some modifications are needed to compile the source (Version 1.1) for Windows with Visual Studio
(tested with Qt 4.7.2, QtCreator 2.1 and Visual Studio 2005)

1. add an include of <time.h> to the source files:
cdggenerator.cpp
testwindow.cpp

2. avoid usage of EINTR in checknewversion.cpp
#if !defined (WIN32)
if ( errno == EINTR )
continue;
#endif

3. link with wsock32 for all win32 configurations
win32::LIBS += -lwsock32
(instead of mingw only: win32-g++-*::LIBS += -lwsock32)

see a resolution for loading mp3 files on windows
Bug # 3121297 "MP3 files won't open at MSWIN"
https://sourceforge.net/tracker/?func=detail&aid=3121297&group_id=290648&atid=1229531