change __TRACE to __CTRACE, so it doesn't collide with nvi

change __TRACE to __CTRACE, so it doesn't collide with nvi

SCCS-vsn: lib/libcurses/addbytes.c 5.21
SCCS-vsn: lib/libcurses/clrtoeol.c 5.12
SCCS-vsn: lib/libcurses/cr_put.c 5.19
SCCS-vsn: lib/libcurses/curses.h 5.34
SCCS-vsn: lib/libcurses/deleteln.c 5.17
SCCS-vsn: lib/libcurses/erase.c 5.12
SCCS-vsn: lib/libcurses/getch.c 5.11
SCCS-vsn: lib/libcurses/initscr.c 5.15
SCCS-vsn: lib/libcurses/insertln.c 5.17
SCCS-vsn: lib/libcurses/move.c 5.13
SCCS-vsn: lib/libcurses/newwin.c 5.17
SCCS-vsn: lib/libcurses/overlay.c 5.13
SCCS-vsn: lib/libcurses/overwrite.c 5.14
SCCS-vsn: lib/libcurses/putchar.c 5.6
SCCS-vsn: lib/libcurses/refresh.c 5.43
SCCS-vsn: lib/libcurses/scroll.c 5.12
SCCS-vsn: lib/libcurses/setterm.c 5.19
SCCS-vsn: lib/libcurses/toucholap.c 5.11
SCCS-vsn: lib/libcurses/touchwin.c 5.12
SCCS-vsn: lib/libcurses/ctrace.c 5.5