expExpressionConf, expValue: isspace cannot take a char argument.
mta_sendmail: isspace cannot take a char argument
swinst_apt: ensure room for string terminator
Merge branch 'V5-4-patches' into V5-5-patches

* V5-4-patches:
  mta_sendmail: isspace cannot take a char argument
  expExpressionConf, expValue: isspace cannot take a char argument.
Merge branch 'V5-5-patches' into V5-6-patches

* V5-5-patches:
  mta_sendmail: isspace cannot take a char argument
  expExpressionConf, expValue: isspace cannot take a char argument.
swrun_*: snprint may have set a too long string length. Fix it if needed.
Merge branch 'V5-5-patches' into V5-6-patches

* V5-5-patches:
  swrun_*: snprint may have set a too long string length. Fix it if needed.
util_func: fix skipping of digits which would run one too far