During work for JDK-8068463 for creation of golden files for negative tests, it was discovered that the error message can be improved when Deprecated annotation is not used with javadoc's deprecated annotation.

Test:
tools/javac/annotations/neg/Dep.java

Current error key:
compiler.warn.missing.deprecated.annotation

Improved error message:
item with @deprecated javadoc tag is not annotated with @Deprecated