Httpのヘッダ解析を正規表現にした

Changes to be committed:
        modified:   .DS_Store
        modified:   bin/Connection$RecieveDescriptor.class
        modified:   bin/Connection$SendDescriptor.class
        modified:   bin/FileManager.class
        modified:   bin/Gnutella$AcceptConnect.class
        modified:   bin/Gnutella$InputReader.class
        modified:   bin/Gnutella.class
        modified:   bin/Http$Get.class
        modified:   bin/Http$Response.class
        modified:   bin/Http.class
        modified:   bin/Manager.class
        modified:   bin/Switch.class
        modified:   get/.DS_Store
        modified:   src/Connection.java
        modified:   src/FileManager.java
        modified:   src/Gnutella.java
        modified:   src/Http.java
        modified:   src/Manager.java
        modified:   src/Switch.java