debian/patches: Cherry-pick post-release upstream cleanups

debian/patches/fpi-image-Check-for-PIXMAN-presency-using-ifdef.patch

@@ -0,0 +1,33 @@
+From: =?utf-8?b?Ik1hcmNvIFRyZXZpc2FuIChUcmV2acOxbyki?= <mail@3v1n0.net>
+Date: Thu, 13 Oct 2022 12:03:31 +0200
+Subject: fpi-image: Check for PIXMAN presency using #ifdef
+
+That's a defined variable that may be there or not, and currently we
+warn with:
+ - fpi-image.c:29:5: warning: "HAVE_PIXMAN" is not defined, evaluates to 0
+---
+ libfprint/fpi-image.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+diff --git a/libfprint/fpi-image.c b/libfprint/fpi-image.c
+index 47aac8d..b21982e 100644
+--- a/libfprint/fpi-image.c
++++ b/libfprint/fpi-image.c
+@@ -25,7 +25,7 @@
+ 
+ #include <nbis.h>
+ 
+-#if HAVE_PIXMAN
++#ifdef HAVE_PIXMAN
+ #include <pixman.h>
+ #endif
+ 
+@@ -107,7 +107,7 @@ fpi_mean_sq_diff_norm (const guint8 *buf1,
+   return res / size;
+ }
+ 
+-#if HAVE_PIXMAN
++#ifdef HAVE_PIXMAN
+ FpImage *
+ fpi_image_resize (FpImage *orig_img,
+                   guint    w_factor,