.jnilib not loaded from the executable directory

[kkriske]

Describe the issue
As of #5932 native libs are loaded from the directory containing the native image. However on MacOS this only works for .dylib libraries and not for .jnilib because ClassLoaderHelper.mapAlternativeName is not considered for sysPath in this code:

graal/substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/jdk/NativeLibrarySupport.java

Lines 122 to 135 in f9ef31f

	String libname = System.mapLibraryName(name);
	if (sysPath != null && loadLibrary0(new File(sysPath, libname), false)) {
	return;
	}
	for (String path : usrPaths) {
	File libpath = new File(path, libname);
	if (loadLibrary0(libpath, false)) {
	return;
	}
	File altpath = Target_jdk_internal_loader_ClassLoaderHelper.mapAlternativeName(libpath);
	if (altpath != null && loadLibrary0(altpath, false)) {
	return;
	}
	}

Steps to reproduce the issue
I don't have a minimal example, but the CI on this PR fails because of this: xerial/sqlite-jdbc#922

Describe GraalVM and your environment:

• GraalVM version: GraalVM CE 17.0.7 and 20.0.1
• OS: macos-latest on GitHub Actions

More details
N/A

[oubidar-Abderrahim]

Thank you for reporting this.