Copy project license files into package

The terms of use attached to the GLU C Library require this.

.circleci/config.yml

@@ -37,7 +37,7 @@ jobs:
           command: docker run --env RSA_PRIVATE_KEY="$RSA_PRIVATE_KEY" --env RSA_PRIVATE_KEY_NAME="sgerrand.rsa" --volumes-from input --volumes-from output sgerrand/alpine-abuild:v7
       - run:
           name: Test package installation
-          command: docker run --volumes-from output alpine:3.8 sh -c "cp /packages/sgerrand.rsa.pub /etc/apk/keys/ && apk -U add --no-progress --upgrade /packages/builder/x86_64/*.apk"
+          command: docker run --volumes-from output alpine:3.8 sh -c "cp /packages/sgerrand.rsa.pub /etc/apk/keys/ && apk -U add --no-progress --upgrade /packages/builder/x86_64/*.apk && test -f /usr/glibc-compat/share/licenses/COPYING && test -f /usr/glibc-compat/share/licenses/LICENSES"
       - run:
           name: Extract packages
           command: |

APKBUILD

@@ -30,6 +30,11 @@ package() {
   ln -s /usr/glibc-compat/lib/ld-linux-x86-64.so.2 ${pkgdir}/lib/ld-linux-x86-64.so.2
   ln -s /usr/glibc-compat/lib/ld-linux-x86-64.so.2 ${pkgdir}/lib64/ld-linux-x86-64.so.2
   ln -s /usr/glibc-compat/etc/ld.so.cache ${pkgdir}/etc/ld.so.cache
+
+  local file; for file in COPYING LICENSES; do
+    install -m 644 -D "$srcdir"/$FILE \
+      "$pkgdir"/usr/glibc-compat/share/licenses/$pkgname/$file
+  done
 }
 
 bin() {