8023550: -d option was broken for any dir but '.'. Fixed Java warnings

...k/nashorn/internal/tools/nasgen/ConstructorGenerator.java

...ashorn/internal/tools/nasgen/ScriptClassInstrumentor.java

nashorn/src/jdk/internal/dynalink/ChainedCallSite.java

nashorn/src/jdk/internal/dynalink/DefaultBootstrapper.java

...n/src/jdk/internal/dynalink/beans/AbstractJavaLinker.java

.../jdk/internal/dynalink/beans/OverloadedDynamicMethod.java

...rn/src/jdk/nashorn/api/scripting/NashornScriptEngine.java

...rn/src/jdk/nashorn/internal/codegen/CompilationPhase.java

nashorn/src/jdk/nashorn/internal/objects/NativeArray.java

nashorn/src/jdk/nashorn/internal/objects/NativeRegExp.java

nashorn/src/jdk/nashorn/internal/runtime/Context.java

...orn/src/jdk/nashorn/internal/runtime/DebuggerSupport.java

nashorn/src/jdk/nashorn/internal/runtime/ScriptObject.java

...k/nashorn/internal/runtime/regexp/joni/ArrayCompiler.java

.../src/jdk/nashorn/internal/runtime/regexp/joni/BitSet.java

...nashorn/internal/runtime/regexp/joni/ByteCodeMachine.java

...nashorn/internal/runtime/regexp/joni/CodeRangeBuffer.java

...n/src/jdk/nashorn/internal/runtime/regexp/joni/Lexer.java

.../src/jdk/nashorn/internal/runtime/regexp/joni/Parser.java

.../src/jdk/nashorn/internal/runtime/regexp/joni/Region.java