linux build fix: on linux we need to set LD_LIBRARY_PATH to launch jvm with native dependency to llvm

InteropExample/build.gradle

@@ -26,6 +26,8 @@ genInteropStubs {
     // these variables will be passed to native toolchain used by stub generator:
     environment 'CPATH'        : "$llvmInstallPath/include"
     environment 'LIBRARY_PATH' : "$llvmInstallPath/lib"
+    //environment 'LD_DEBUG' : "all"
+    environment 'LD_LIBRARY_PATH' : "$llvmInstallPath/lib"
 }
 
 mainClassName = 'MainKt'

backend.native/build.gradle

@@ -77,4 +77,5 @@ repositories {
 genCompilerInteropStubs {
     environment 'CPATH'        : "$llvmInstallPath/include"
     environment 'LIBRARY_PATH' : "$llvmInstallPath/lib"
+    environment 'LD_LIBRARY_PATH' : "$llvmInstallPath/lib"
 }