VT100 symbols are assigned incorrectly

[stylewarning]

VT100 symbols, like ACS_ULCORNER, are assigned incorrectly. They are currently assigned to characters, but really should be assigned to a value that C likes. A relevant bits from ncurses.h are:

#define NCURSES_ACS(c)  (acs_map[NCURSES_CAST(unsigned char,c)])

/* VT100 symbols begin here */
#define ACS_ULCORNER    NCURSES_ACS('l') /* upper left corner */
// ...