I want to compile the curses extension with -locurses rather than
-lcurses, so I change ext/Makefile a bit to have -locurses instead. After
this I `make clean', and then `make'

It compiles with -lcurses. Why? There were no mentions of a Makefile
modification, and if I grep around a bit there is no -lcurses needed to be
changed. The Makefile in ext/Makefile has -lcurses where I had seconds
earlier put -locurses. Wierd, and a little annoying, how can I force it to
compile with -locurses?