/* $DOC$
   $NAME$
      ft_NoOccur()
   $CATEGORY$
      String
   $ONELINER$
      Find the number of times one string occurs in another
   $SYNTAX$
      ft_NoOccur( <cCheckFor>, <cCheckIn> ;
                  [, <lIgnoreCase> ] ) -> <nOccurrences>
   $ARGUMENTS$
      <cCheckFor> is the string to search for

      <cCheckIn> is the string to search

      <lIgnoreCase> is a boolean variable to force case sensitivity
      (optional, defaults to .T.).
   $RETURNS$
      The number of times <cCheckFor> appears in <cCheckIn>
   $DESCRIPTION$
      This function finds the number of times a string occurs in a
         second string.
   $EXAMPLES$
      // Find the number of times "the" appears in cMemoString, case
      // insensitive
      ? ft_NoOccur( "the", cMemoString )

      // Find the number of times "the" appears in cMemoString, case
      // sensitive
      ? ft_NoOccur( "the", cMemoString, .F. )
   $END$
 */