fix issues with libgraal compilation

Author: Felix Berlakovich

compiler/src/jdk.graal.compiler.test/src/jdk/graal/compiler/hotspot/test/LibGraalCompilationDriver.java

@@ -340,7 +340,7 @@ public long readTimeElapsed() {
         public static class ProfilePathBuffer extends NativeBuffer {
             private final byte[] profilesPathBytes;
 
-            ProfilePathBuffer(String profilesPath) {
+            public ProfilePathBuffer(String profilesPath) {
                 /* Append the terminating 0. */
                 byte[] stringBytes = profilesPath.getBytes();
                 this.profilesPathBytes = Arrays.copyOf(stringBytes, stringBytes.length + 1);