Fix path inconsistency

This commit renames win32 to Win32 in Source/BansheeGLRenderAPI/Source,
and fixes a couple of paths in CMake files.

Source/BansheeGLRenderAPI/CMakeLists.txt

@@ -9,7 +9,7 @@ set(BansheeGLRenderAPI_INC
 	"Source/GLSL/include")
 
 if(WIN32)
-	set(BansheeGLRenderAPI_INC ${BansheeGLRenderAPI_INC} "Source/win32")
+	set(BansheeGLRenderAPI_INC ${BansheeGLRenderAPI_INC} "Source/Win32")
 else()
 # TODO_OTHER_PLATFORMS_GO_HERE
 endif()

Source/BansheeGLRenderAPI/CMakeSources.cmake

@@ -33,10 +33,10 @@ set(BS_BANSHEEGLRENDERAPI_INC_NOFILTER
 )
 
 set(BS_BANSHEEGLRENDERAPI_SRC_WIN32
-	"Source/win32/BsWin32Context.cpp"
-	"Source/win32/BsWin32GLSupport.cpp"
-	"Source/win32/BsWin32RenderWindow.cpp"
-	"Source/win32/BsWin32VideoModeInfo.cpp"
+	"Source/Win32/BsWin32Context.cpp"
+	"Source/Win32/BsWin32GLSupport.cpp"
+	"Source/Win32/BsWin32RenderWindow.cpp"
+	"Source/Win32/BsWin32VideoModeInfo.cpp"
 )
 
 set(BS_BANSHEEGLRENDERAPI_SRC_NOFILTER