main/curses: use abuild strip only

Fails to cross-compile:

  strip: Unable to recognise the format of the input file `[...]/aports/main/ncurses/pkg/ncurses/usr/bin/tic'
  install: strip: No such file or directory
  make[1]: *** [Makefile:201: install.progs] Error 1

main/ncurses/APKBUILD

@@ -2,7 +2,7 @@
 pkgname=ncurses
 pkgver=6.0_p20180121
 _ver=${pkgver%_p*}-${pkgver#*_p}
-pkgrel=0
+pkgrel=1
 pkgdesc="Console display library"
 url="https://www.gnu.org/software/ncurses/"
 arch="all"
@@ -33,6 +33,7 @@ build() {
 		--without-tests \
 		--disable-termcap \
 		--disable-rpath-hack \
+		--disable-stripping \
 		--with-pkg-config-libdir=/usr/lib/pkgconfig \
 		--without-cxx-binding \
 		--with-terminfo-dirs="/etc/terminfo:/usr/share/terminfo" \