reconsitution the browser and server's source code:
1. Use only NSCHttpBrowser and NSCHttpServer to simulate all the http 
processes between servers and browsers. (delete the HarBrowser and
HarServer which derive from NSC ones to get msg infos from har files).
2. add CMessageController to control all the variable factors related to
messages, and provide uniform interfaces to browsers and servers to get
message informations and generate/parse, compress/decompress the message
headers.
3. Add a series of HeaderCompressors to do message header compressing
and decompressing. Now only realize CHeaderCompressorBase,
CNoneCompressor and CSpdy3Compressor.
4. Add a series of HeaderEncoders to do message generating and
parsing(especially header encoding and decoding). Now only realize
CheaderEncoderBase, CHttpAsciiEncoder and encoding of
CSpdyHeaderBlockEncoder.
5. Add a series of messageInfoSrc to get message information. Now only
realize MsgInfoSrcBase, SelfGen and HarParser.
6. Normalize the codes in NSCHttpBrowser and NSCHttpServer.
Depend on the reconsitution of the browser and server's source code,
change the configuration in network NED and INI file