Update bug URLs from naclports to webports

ports/libffi/nacl.patch

 diff --git a/configure b/configure
 --- a/configure
 +++ b/configure
 @@ -17074,6 +17099,10 @@ fi
  TARGETDIR="unknown"
  HAVE_LONG_DOUBLE_VARIANT=0
  case "$host" in
 +  *nacl*)
 +       TARGET=NACL; TARGETDIR=x86
 +       ;;
 +
    aarch64*-*-*)
         TARGET=AARCH64; TARGETDIR=aarch64
         ;;
 diff --git a/src/types.c b/src/types.c
 --- a/src/types.c
 +++ b/src/types.c
 @@ -33,6 +33,38 @@
  
  /* Type definitions */
  
 +#ifdef __native_client__
 +/*
 + * Dummy implementation of libffi functions.  This may be an incomplete
 + * list.  It was intented to be enough to allow glib to be built.
 + * TODO(sbc): Remove this once we fix libffi:
-+ * https://code.google.com/p/naclports/issues/detail?id=183
++ * https://bugs.chromium.org/p/webports/issues/detail?id=183
 + */
 +void ffi_call(ffi_cif *cif, void (*fn)(void), void *rvalue, void **avalue) {
 +  abort();
 +}
 +
 +ffi_status ffi_prep_cif_machdep(ffi_cif *cif) {
 +  abort();
 +  return FFI_BAD_ABI;
 +}
 +
 +ffi_status ffi_prep_closure_loc(ffi_closure *closure, ffi_cif* cif,
 +    void (*fun)(ffi_cif*,void*,void**,void*), void *user_data, void *codeloc)
 +{
 +  abort();
 +  return FFI_BAD_ABI;
 +}
 +
 +ffi_status ffi_prep_raw_closure_loc(ffi_raw_closure *closure, ffi_cif *cif,
 +    void (*fun)(ffi_cif*,void*,ffi_raw*,void*), void *user_data,
 +    void *codeloc) {
 +  abort();
 +  return FFI_BAD_ABI;
 +}
 +#endif
 +
 +
  #define FFI_TYPEDEF(name, type, id, maybe_const)\
  struct struct_align_##name {                   \
    char c;                                      \