debian: sync with the package

* debian/control (Build-Depends) [amd64]: Remove libunwind-dev.
* debian/changelog: Sync with 4.12-3.
* debian/rules: Likewise.
diff --git a/debian/changelog b/debian/changelog
index 89157c8..c168ae6 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,16 @@
+strace (4.12-3) unstable; urgency=medium
+
+  * Fix up 32/64-bit test output in strace -S test to fix i386 build
+  * Run make check with VERBOSE=1 so we get useful information in build logs
+
+ -- Steve McIntyre <93sam@debian.org>  Sat, 04 Jun 2016 02:37:44 +0100
+
+strace (4.12-2) unstable; urgency=medium
+
+  * Remove libunwind dependency. Closes: #826223
+
+ -- Steve McIntyre <93sam@debian.org>  Fri, 03 Jun 2016 13:43:44 +0100
+
 strace (4.12-1) unstable; urgency=low
 
   [ Dmitry V. Levin ]