Parsing Strings – Standard Library

The get string function was changed to use a standard input stream (temporarily putting the input string from the current position into a temporary local input string stream of the same name as the member variable to simulate the final parser code).  The looking at and the obtaining of current character was changed as previously described.

Instead of incrementing the local position variable for each character in the string constant, this variable is just set to the current input position.  This will be changed to get the position within the input stream stream once the member variable is changed.  The current input position is incremented for each character.  After the change, the current input position member variable will not be needed.

[branch parser commit ab3b1c08f18]