sys-process/criu: disable use of the gold linker

The criu build process uses a custom linker script that doesn't play
well the output of the gold linker leading to build failures.  Disable
gold for now to avoid this.

sys-process/criu/criu-3.7.ebuild

@@ -66,6 +66,12 @@ src_prepare() {
 	fi
 }
 
+src_configure() {
+	# Gold linker generates invalid object file when used with criu's custom
+	# linker script.  Use the bfd linker instead. See https://crbug.com/839665#c3
+	tc-ld-disable-gold
+}
+
 src_compile() {
 	RAW_LDFLAGS="$(raw-ldflags)" emake \
 		CC="$(tc-getCC)" \