Adjusted the linker flags for kconfig mconf (menuconfig)

For some reason, this breaks on my Gentoo systems.  There,
libcurses does not contain nodelay, so the linking fails
with symbol resolution errors regarding the nodelay symbol.

I have changed it to use pkg-config --libs ncurses, which,
in my case, adds -ltinfo to fix this issue.

Signed-off-by: Michael T. Kloos <michael@michaelkloos.com>

Author: echelonxray

kconfig/Makefile

@@ -67,7 +67,7 @@ gen_config.h: .config
 
 kconfig/mconf: $(SHIPPED)
 	$(HOSTCC) -o $@ kconfig/mconf.c kconfig/zconf.tab.c \
-		kconfig/lxdialog/*.c -lcurses -DCURSES_LOC="<ncurses.h>" \
+		kconfig/lxdialog/*.c -lcurses -ltinfo -DCURSES_LOC="<ncurses.h>" \
 		-DKBUILD_NO_NLS=1 -DPROJECT_NAME=\"$(KCONFIG_PROJECT)\"
 
 kconfig/conf: $(SHIPPED)