Ncurses conflict

[thesamprice]

src/rtklib.h:1411:13: error: conflicting types for 'trace'
EXPORT void trace    (int level, const char *format, ...);
            ^
/opt/local/include/curses.h:2061:29: note: previous declaration is here
extern NCURSES_EXPORT(void) trace (const unsigned) GCC_DEPRECATED("use curses_trace");

/opt/local/include/curses.h:657:29: note: previous declaration is here
extern NCURSES_EXPORT(void) filter (void);                              /* implemented */

[thesamprice]

See pull request
#579