main/mpc1: replace egrep with grep -E

main/mpc1/APKBUILD

 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=mpc1
 pkgver=1.2.1
-pkgrel=0
+pkgrel=1
 pkgdesc="Multiprecision C library"
 url="http://www.multiprecision.org/"
 arch="all"
@@ -15,7 +15,7 @@ builddir="$srcdir"/mpc-$pkgver
 
 build() {
 	# workaround for a bug in configure script
-	EGREP=egrep \
+	EGREP="grep -E" \
 	./configure \
 		--build=$CBUILD \
 		--host=$CHOST \
@@ -36,4 +36,6 @@ package() {
 	make DESTDIR="$pkgdir" install
 }
 
-sha512sums="3279f813ab37f47fdcc800e4ac5f306417d07f539593ca715876e43e04896e1d5bceccfb288ef2908a3f24b760747d0dbd0392a24b9b341bc3e12082e5c836ee  mpc-1.2.1.tar.gz"
+sha512sums="
+3279f813ab37f47fdcc800e4ac5f306417d07f539593ca715876e43e04896e1d5bceccfb288ef2908a3f24b760747d0dbd0392a24b9b341bc3e12082e5c836ee  mpc-1.2.1.tar.gz
+"