strmtrim(3)replace multiple white spaces with single blanks within string
SYNOPSIS
#include <publib.h> char *strmtrim(char *str);
DESCRIPTION
strmtrim will replace every run of whitespace characters
(as defined by isspace(3)) with a single blank. It will not
touch leading and trailing whitespace (use strltrim(3) and
strrtrim(3) for those).
