javadoc fixes part 3 (ticket #1894)

apps/i2psnark/java/src/org/klomp/snark/BitField.java

apps/i2psnark/java/src/org/klomp/snark/MetaInfo.java

apps/i2psnark/java/src/org/klomp/snark/Peer.java

apps/i2psnark/java/src/org/klomp/snark/Storage.java

apps/i2psnark/java/src/org/klomp/snark/bencode/BDecoder.java

.../jetty/java/src/org/mortbay/servlet/MultiPartRequest.java

apps/jetty/java/src/org/mortbay/util/LineInput.java

core/java/src/gnu/getopt/LongOpt.java

core/java/src/net/i2p/crypto/CryptixRijndael_Algorithm.java

core/java/src/org/bouncycastle/oldcrypto/Mac.java