Compile warnings with latest CVS

[Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>]

("zsh-4.0" happens to be the name of my CVS sandbox, but I'm compiling the
latest 4.2.3-dev-1 [should that be renamed zsh-4.2.4-dev-1 now?].)

../../zsh-4.0/Src/init.c:1179: warning: `autoload_zlesetkeymap' defined but not used
../../zsh-4.0/Src/utils.c:3450: warning: no previous prototype for `ucs4toutf8'
../../zsh-4.0/Src/utils.c: In function `ucs4toutf8':
../../zsh-4.0/Src/utils.c:3472: warning: suggest parentheses around arithmetic in operand of |
../../zsh-4.0/Src/utils.c: In function `getkeystring':
../../zsh-4.0/Src/utils.c:3656: warning: passing arg 2 of `iconv' from incompatible pointer type
In file included from ../../../zsh-4.0/Src/Modules/terminfo.c:53:
/usr/include/curses.h:195: warning: `ERR' redefined
/usr/include/sys/ucontext.h:74: warning: this is the location of the previous definition