Remove support for SunOS 4.
Remove BAD_EXEC_PROTOYPE (leftover from IRIX 4 demolition).
diff --git a/Modules/Setup.dist b/Modules/Setup.dist
index 3ca6dab..51442c9 100644
--- a/Modules/Setup.dist
+++ b/Modules/Setup.dist
@@ -361,8 +361,7 @@
# Curses support, requring the System V version of curses, often
# provided by the ncurses library. e.g. on Linux, link with -lncurses
-# instead of -lcurses; on SunOS 4.1.3, insert -I/usr/5include
-# -L/usr/5lib before -lcurses).
+# instead of -lcurses).
#
# First, look at Setup.config; configure may have set this for you.