String :: toCString - Convert string to C-string
C-strings are strings that could be defined as string constant in a C program. C-strings must not contain several characters, wich are converted as follows:
- \ ==> \\
- newline (10) ==> \n
- carriage return (13) ==> \r
- backspace (8) ==> \b
- form feed (12) ==> \f
- tab (9) == \t
- " ==> \"
Conversion is done inplace. In order to normalize the string later on, fromCString() may be called.
Return value: String value ( odaba::String & )