configure: use check_lib2 for cuda and cuvid

Fixes building for Windows x86 with MSVC using the link libraries distributed with the CUDA SDK.

check_lib2 is required here because it includes the header to get the full signature of the
function, including the stdcall calling convention and all of its arguments, which enables
the linker to determine the fully qualified object name and resolve it through the import
library, since the CUDA SDK libraries do not include un-qualified aliases.

configure

@@ -5659,10 +5659,10 @@ fi
 enabled avfoundation_indev && { check_header_objcc AVFoundation/AVFoundation.h || disable avfoundation_indev; }
 enabled avfoundation_indev && { check_lib2 CoreGraphics/CoreGraphics.h CGGetActiveDisplayList -framework CoreGraphics ||
                                 check_lib2 ApplicationServices/ApplicationServices.h CGGetActiveDisplayList -framework ApplicationServices; }
-enabled cuda              && { check_lib cuda.h cuInit -lcuda ||
+enabled cuda              && { check_lib2 cuda.h cuInit -lcuda ||
                                die "ERROR: CUDA not found"; }
 enabled cuvid             && { add_cflags -I$source_path;
-                               check_lib "compat/cuda/cuviddec.h" cuvidCreateDecoder -lnvcuvid ||
+                               check_lib2 "compat/cuda/cuviddec.h" cuvidCreateDecoder -lnvcuvid ||
                                die "ERROR: CUVID not found"; } &&
                              { enabled cuda ||
                                die "ERROR: CUVID requires CUDA"; }