Ports: Explicitely link against libintl when using libgpg-error

For some reason, this will become necessary in the next commit. This
library is already included in glibc so it is not needed to link against
it on Linux, but otherwise required.

Ports/libassuan/package.sh

@@ -24,5 +24,6 @@ configure() {
         --disable-static \
         --enable-shared \
         --with-libgpg-error-prefix="${SERENITY_INSTALL_ROOT}/usr/local" \
-        --with-sysroot="${SERENITY_INSTALL_ROOT}"
+        --with-sysroot="${SERENITY_INSTALL_ROOT}" \
+        LDFLAGS="-lintl"
 }

Ports/libksba/package.sh

@@ -22,5 +22,6 @@ configure() {
         --host="${SERENITY_ARCH}-serenity" \
         --build="$("${workdir}/build-aux/config.guess")" \
         --with-libgpg-error-prefix="${SERENITY_INSTALL_ROOT}/usr/local" \
-        --with-sysroot="${SERENITY_INSTALL_ROOT}"
+        --with-sysroot="${SERENITY_INSTALL_ROOT}" \
+        LDFLAGS="-lintl"
 }