Add a statement to the `java.io` package documentation clarifying how a `String` representing a _pathname string_ is interpreted in the package.
------------- Commit messages: - 8058924: FileReader(String) documentation is insufficient Changes: https://git.openjdk.java.net/jdk/pull/7767/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk&pr=7767&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8058924 Stats: 6 lines in 1 file changed: 4 ins; 0 del; 2 mod Patch: https://git.openjdk.java.net/jdk/pull/7767.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/7767/head:pull/7767 PR: https://git.openjdk.java.net/jdk/pull/7767
