PR libgcj/27171:
* testsuite/libjava.lang/pr27171.java: New file.
* testsuite/libjava.lang/pr27171.out: New file.
* gnu/gcj/convert/Output_UTF8.java (havePendingBytes): Return
true if we've seen a high surrogate.
(write): Handle high surrogates at the end of the stream.
Properly emit isolated low surrogates.
From-SVN: r113013