new version of rpolcalc with multiple source files used
converted private variables to static delcaration
redid getop to avoid ungetch using static variable, probably could be cleaned up
added recursive printd from text
added qsort version from text
added demonstration of swap macro for given type
completed recursive reverse
completed messy recursive version of itoa.c
removed unneccessary ungets from getch in rpolcalc
itoa.c complete
fixed getint issue with dangling sign not pushing back next character
completed getfloat using pointers based off atof.c
completed pointer version of strcat
completed strend function
added examples from the text