Update libpcap to 1.1.1.

Update libpcap to 1.1.1.

Changes:

Thu.    April 1, 2010.  guy@alum.mit.edu.
Summary for 1.1.1 libpcap release
        Update CHANGES to reflect more of the changes in 1.1.0.
        Fix build on RHEL5.
        Fix shared library build on AIX.

Thu.    March 11, 2010.  ken@netfunctional.ca/guy@alum.mit.edu.
Summary for 1.1.0 libpcap release
        Add SocketCAN capture support
        Add Myricom SNF API support
        Update Endace DAG and ERF support
        Add support for shared libraries on Solaris, HP-UX, and AIX
        Build, install, and un-install shared libraries by default;
          don't build/install shared libraries on platforms we don't support
        Fix building from a directory other than the source directory
        Fix compiler warnings and builds on some platforms
        Update config.guess and config.sub
        Support monitor mode on mac80211 devices on Linux
        Fix USB memory-mapped capturing on Linux; it requires a new DLT_
          value
        On Linux, scan /sys/class/net for devices if we have it; scan
          it, or /proc/net/dev if we don't have /sys/class/net, even if
          we have getifaddrs(), as it'll find interfaces with no
          addresses
        Add limited support for reading pcap-ng files
        Fix BPF driver-loading error handling on AIX
        Support getting the full-length interface description on FreeBSD
        In the lexical analyzer, free up any addrinfo structure we got back
          from getaddrinfo().
        Add support for BPF and libdlpi in OpenSolaris (and SXCE)
        Hyphenate "link-layer" everywhere
        Add /sys/kernel/debug/usb/usbmon to the list of usbmon locations
        In pcap_read_linux_mmap(), if there are no frames available, call
          poll() even if we're in non-blocking mode, so we pick up
          errors, and check for the errors in question.
        Note that poll() works on BPF devices is Snow Leopard
        If an ENXIO or ENETDOWN is received, it may mean the device has
          gone away.  Deal with it.
        For BPF, raise the default capture buffer size to from 32k to 512k
        Support ps_ifdrop on Linux
        Added a bunch of #ifdef directives to make wpcap.dll (WinPcap) compile
         under cygwin.
        Changes to Linux mmapped captures.
        Fix bug where create_ring would fail for particular snaplen and
          buffer size combinations
        Update pcap-config so that it handles libpcap requiring
          additional libraries
        Add workaround for threadsafeness on Windows
        Add missing mapping for DLT_ENC <-> LINKTYPE_ENC
        DLT: Add DLT_CAN_SOCKETCAN
        DLT: Add Solaris ipnet
        Don't check for DLT_IPNET if it's not defined
        Add link-layer types for Fibre Channel FC-2
        Add link-layer types for Wireless HART
        Add link-layer types for AOS
        Add link-layer types for DECT
        Autoconf fixes (AIX, HP-UX, OSF/1, Tru64 cleanups)
        Install headers unconditionally, and include vlan.h/bluetooth.h if
          enabled
        Autoconf fixes+cleanup
        Support enabling/disabling bluetooth (--{en,dis}able-bluetooth)
        Support disabling SITA support (--without-sita)
        Return -1 on failure to create packet ring (if supported but
          creation failed)
        Fix handling of 'any' device, so that it can be opened, and no longer
          attempt to open it in Monitor mode
        Add support for snapshot length for USB Memory-Mapped Interface
        Fix configure and build on recent Linux kernels
        Fix memory-mapped Linux capture to support pcap_next() and
          pcap_next_ex()
        Fixes for Linux USB capture
        DLT: Add DLT_LINUX_EVDEV
        DLT: Add DLT_GSMTAP_UM
        DLT: Add DLT_GSMTAP_ABIS