Update upstream source from tag 'upstream/1.5'

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docs/api/index.html

...pi/org/apache/regexp/CharacterArrayCharacterIterator.html

docs/api/org/apache/regexp/CharacterIterator.html

docs/api/org/apache/regexp/RE.html

docs/api/org/apache/regexp/RECompiler.RERange.html

docs/api/org/apache/regexp/RECompiler.html

docs/api/org/apache/regexp/REDebugCompiler.html

docs/api/org/apache/regexp/REDemo.html

docs/api/org/apache/regexp/REProgram.html

docs/api/org/apache/regexp/RESyntaxException.html

docs/api/org/apache/regexp/RETest.html