Change static config to use standard name

Author: fpoussin

README.md

@@ -39,7 +39,7 @@ make install
 Alternatively build as static library (best for portability)  
 ```shell
 mkdir build && cd build
-qmake CONFIG+=static_lib ..
+qmake CONFIG+=staticlib ..
 make install
 ```
 

build_msvc.bat

@@ -39,7 +39,7 @@ SET PROJDIR=%CD%
 SET BUILDDIR=%PROJDIR%\..\build-qtusb-%ARCH%
 
 SET STATIC=""
-IF "%LIBTYPE%" == "static" SET STATIC="CONFIG+=static_lib"
+IF "%LIBTYPE%" == "static" SET STATIC="CONFIG+=staticlib"
 
 CALL "C:\Program Files (x86)\Microsoft Visual Studio\%MSVC%\Community\VC\Auxiliary\Build\vcvarsall.bat" %vcarch%
 

src/usb/usb.pro

@@ -7,9 +7,8 @@ DEFINES += QT_BUILD_USB_LIB
 
 include($$PWD/usb-lib.pri)
 
-CONFIG(static_lib) {
+CONFIG(staticlib) {
     message("Build as Qt module (static library)")
-    CONFIG += staticlib
 } else {
     message("Build as Qt module (dynamic library)")
 }