Windows build environment:

- Renamed folder build_libs to build-libs
- Removed old file stripSVN.sh
- Fixed some batch files
- Switch from curl to wget
- Added Qt environment
- Added build.bat to build everything

build_scripts/Windows/env/env-qt.bat

@@ -0,0 +1,23 @@
+:: Usage:
+:: call env-qt4.bat version [reinstall|clean]
+
+:: Initialize environment
+call "%~dp0env.bat"
+if errorlevel 1 goto error_env
+
+set EnvQtBasePath=%EnvRootPath%\qt
+
+:: Create folders
+if not exist "%EnvQtBasePath%" mkdir "%EnvQtBasePath%"
+
+call "%~dp0tools\prepare-qt.bat" %1 %2
+if errorlevel 1 exit /B %ERRORLEVEL%
+
+if "%MinGWDir%" NEQ "" set PATH=%MinGWDir%\bin;%PATH%
+if "%QtDir%" NEQ "" set PATH=%QtDir%\bin;%PATH%
+
+exit /B 0
+
+:error_env
+echo Failed to initialize environment.
+exit /B 1