Generic "struct to string" and "string to struct" function

[David Santamaria]

Given a buffer, format string, and a number of pointers, create two functions:

• One that will read and parse the format string and write members to pointers
• One that will write the values from pointers into the buffer as directed by the format string

basically, a scanf/printf but specifically for dynamically creating/handling arbitrary messages. Much better than hard-coded messag e structure