binutils enable plugins

fix "Gold linker ld.gold -plugin : unknown option"

binutils/PKGBUILD

@@ -2,7 +2,7 @@
 
 pkgname=binutils
 pkgver=2.29.1
-pkgrel=1
+pkgrel=2
 pkgdesc="A set of programs to assemble and manipulate binary and object files"
 arch=('x86_64')
 url="http://www.gnu.org/software/binutils/"
@@ -44,6 +44,7 @@ build() {
     --enable-shared \
     --enable-ld=default \
     --enable-gold \
+    --enable-plugins \
     --enable-relro \
     --enable-deterministic-archives \
     --with-pic \