8276572: Fake libsyslookup.so library causes tooling issues

Backport-of: a4724332098cd8bff44ee27e9190fd28fa5c1865

Author: gnu-andrew

src/jdk.incubator.foreign/share/native/libsyslookup/syslookup.c

@@ -26,3 +26,8 @@
 // Note: the include below is not strictly required, as dependencies will be pulled using linker flags.
 // Adding at least one #include removes unwanted warnings on some platforms.
 #include <stdlib.h>
+
+// Simple dummy function so this library appears as a normal library to tooling.
+char* syslookup() {
+  return "syslookup";
+}