libffi: bump to 3.3

extra/libffi/build

@@ -2,16 +2,12 @@
 
 ./configure \
     --prefix=/usr \
-    --includedir=/usr/include \
     --with-pic
 
 make
 make DESTDIR="$1" install
 
-# Fix location for headers.
-mv    "$1/usr/lib/libffi-3.2.1/include/" "$1/usr"
-rmdir "$1/usr/lib/libffi-3.2.1"
-
-# Fix location inside pkgconfig file.
-sed -i '/^includedir=/{s,=.*,=/usr/include,g}' \
-    "$1/usr/lib/pkgconfig/libffi.pc"
+# Maintain compatibility and avoid the need
+# for rebuilds of all packages linking to
+# libffi.
+ln -s libffi.so.7 "$1/usr/lib/libffi.so.6"

extra/libffi/checksums

@@ -1 +1 @@
-d06ebb8e1d9a22d19e38d63fdb83954253f39bedc5d46232a05645685722ca37  libffi-3.2.1.tar.gz
+72fba7922703ddfa7a028d513ac15a85c8d54c8d67f55fa5a4802885dc652056  libffi-3.3.tar.gz

extra/libffi/sources

@@ -1 +1 @@
-https://sourceware.org/pub/libffi/libffi-3.2.1.tar.gz
+https://sourceware.org/pub/libffi/libffi-3.3.tar.gz

extra/libffi/version

@@ -1 +1 @@
-3.2.1 3
+3.3 1