Many string truncation warnings with newer GCC

[jphickey]

Describe the bug
Ubuntu has released 20.04 LTS which includes GCC 9.3.0. When using this compiler it implements a much stricter (and often over-zealous) checking of string ops.

For instance:

In file included from /usr/include/string.h:495,
                 from /home/joe/code/cfecfs/github/psp/fsw/pc-linux/src/cfe_psp_start.c:37:
In function ‘strncpy’,
    inlined from ‘CFE_PSP_ProcessArgumentDefaults’ at /home/joe/code/cfecfs/github/psp/fsw/pc-linux/src/cfe_psp_start.c:524:7:
/usr/include/x86_64-linux-gnu/bits/string_fortified.h:106:10: error: ‘__builtin_strncpy’ specified bound 32 equals destination size [-Werror=stringop-truncation]
  106 |   return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest));
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

To Reproduce
Build code with default config using GCC 9.3.0, with optimization enabled and full warnings.

Expected behavior
Code should build cleanly.

System observed on:
Ubuntu 20.04 LTS 64 bit.

Reporter Info
Joseph Hickey, Vantage Systems, Inc.