Log Message:
ham/hamlib: Update to 4.1

Version 4.1
        2021-01-31
        * rigctld and rigs should be more robust for disconnect problems
        * Several fixes for Icom and Yaesu rigs
        * Nobody should need to use rig->caps or rig->state anymore
             If you need a variable added please contact us.
             Note that rig->state abstraction is not implemented yet...no \ 
need known
        * New rig_get_caps_int and rig_get_caps_cptr functions to replace using \ 
caps-> values
        * New rig_get_function to replace using caps-> function pointers
        * Fix shared library problem with WSJTX, JTDX, and JS8Call
        * New model Barrett 950

Version 4.0
        2020-11-29
        * API/ABI changes, advance ABI to 4 0 0.
        * Add GPIO and GPION options for DCD.  Jeroen Vreeken
        * New backend: ELAD FDM DUO.  Giovanni, HB9EIK.
        * New RIG_LEVEL_RFPOWER_METER_WATTS level
        * All channel functions now take a vfo argument
        * New rotator backend: iOptron. Bob, KD8CGH
        * New model: Icom IC-R8600.  Ekki, DF4OR
        * New utility: rigctlcom.  Mike, W9MDB
        * New model: FT847UNI for unidirectional early serial numbers.  Mike, W9MDB
        * Remove GNU Texinfo files and build system dependency.
        * Rig model numbers have changed to allow future growth
        * Fix a lot of static code analysis errors and warnings.  Mike, W9MDB
        * Rearrange directory structure to put rigs and rotators sources
          under their own subdirectories.  Mike, W9MDB
        * rig_get_channel changed to add read_only flag.
        * rigctl(d) f command also returns VFO now.
        * caching of vfo, frequency, mode, and ptt speeds up rigctld for all.
        * caching of kenwood/yaesu "IF" speeds up polling from WSJTX/JTDX.
        * rig_get_channel now has read_only flag but it still needs to be
          implemented based on rig behavior, so if you use rig_get_channel you
          may get a RIG_ENIMPL error to contact us for fixing it.
        * New rig backend for Elecraft K4.
        * New rig backend for PowerSDR (Flex and Apache users).
        * Many fixes and enhancements.  Mike, W9MDB and many contributors
        * PTT port is no longer shared by default, use --set-conf=ptt_share=1 to \ 
enable