Fix caplitalization for MinGW-w64 cross compilation.

MinGW-w64 cross compilation packages always use lower-case filenames.
library name "Ws2_32" changed to "ws2_32"
include name "Windows.h" changed to "windows.h"

Change-Id: I405f2e23c3f136961f66fc5e1d0d98f760c46e2c
Reviewed-by: Daniel Teske <daniel.teske@digia.com>

src/tools/win64interrupt/win64interrupt.c

@@ -35,7 +35,7 @@
 #error Must target Windows NT 5.0.1 or later for DebugBreakProcess
 #endif
 
-#include <Windows.h>
+#include <windows.h>
 #include <stdio.h>
 
 /* To debug break a 64bit application under Windows, you must call

tests/manual/utils/tcpportsgatherer/tcpportsgatherer.pro

@@ -24,5 +24,5 @@ SOURCES += \
     $${UTILSDIR}/portlist.cpp \
     $${UTILSDIR}/tcpportsgatherer.cpp
 
-win32:LIBS += -liphlpapi -lWs2_32
+win32:LIBS += -liphlpapi -lws2_32
 SOURCES += main.cpp

tests/manual/utils/tcpportsgatherer/tcpportsgatherer.qbp

@@ -16,7 +16,7 @@ Application {
 
     Properties {
         condition: qbs.targetOS == "windows"
-        cpp.dynamicLibraries: [ "iphlpapi.lib", "Ws2_32.lib" ]
+        cpp.dynamicLibraries: [ "iphlpapi.lib", "ws2_32.lib" ]
     }
 
     Depends { name: "cpp" }