Changes

**1.jdgriffith: TAB, Insert (2 keys); int iol_flag(......) (1 function)

**2.lwu11: DEL, BackSpace ( 2 keys); void_displayflag(....) (1 function)

**3.mrtait1: Left,Right, home, End (4 keys); void iol_displayMenuItem (1 function)

**4.Joan: Escape(1key); int iol_menuItem(const char..........)(1 function) * format,const char* menuItem, Line Editor: int row, int col, int len, int* statusiol_edit(.....) (1 functioneverybody)