Count the number of times a character appears in a string
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 Syntax

        GT_ChrCount(<cChr>, <cStr>) --> nFreq

 Arguments:

      <cChr>  - The character to find the frequence of
      <cStr>  - The string in which to find the character

 Returns:

      nFreq   - The number of times <cChr> occurs in <cStr>

 Description:

      GT_ChrCount() counts how many times a specified character
      appears in a string.

      NOTE:
         invalid parameters will return -1

 Examples:


      ? GT_ChrCount("t", "the cat sat on the mat")      // prints 4


 Source: CHRCOUNT.C

 Author:  Andy M Leighton