lib: add lib.target as path for searching libnode on z/OS

Author: alexcfyung

lib/configure.js

@@ -169,6 +169,8 @@ function configure (gyp, argv, callback) {
         })
       } else {
         candidates = [
+          'out/Release/lib.target/libnode',
+          'out/Debug/lib.target/libnode',
           'out/Release/obj.target/libnode',
           'out/Debug/obj.target/libnode',
           'lib/libnode'