package/jack2: backport two build fixes

new file mode 100644
index 000000000..dadaf44ed
@@ -0,0 +1,31 @@
+From f7bccdca651592cc4082b28fd4a01ed6ef8ab655 Mon Sep 17 00:00:00 2001
+From: Kjetil Matheussen <[email protected]>
+Date: Sat, 15 Jul 2017 13:21:59 +0200
+Subject: [PATCH] Tests: Fix compilation with gcc7
+
+Fixes
+../tests/test.cpp: In function ?int process4(jack_nframes_t, void*)?:
+../tests/test.cpp:483:73: error: call of overloaded ?abs(jack_nframes_t)? is ambiguous
+  if (delta_time > 0  && (jack_nframes_t)abs(delta_time - cur_buffer_size) > tolerance) {
+
+Downloaded from upstream commit
+https://github.com/jackaudio/jack2/commit/f7bccdca651592cc4082b28fd4a01ed6ef8ab655
+
+Signed-off-by: Bernd Kuhls <[email protected]>
+---
+ tests/test.cpp | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/tests/test.cpp b/tests/test.cpp
+index 8a8a8117..d2ef9a05 100644
+--- a/tests/test.cpp
++++ b/tests/test.cpp
+@@ -479,7 +479,7 @@ int process4(jack_nframes_t nframes, void *arg)
+ 	jack_nframes_t delta_time = cur_time - last_time;
+ 
+ 	Log("calling process4 callback : jack_frame_time = %ld delta_time = %ld\n", cur_time, delta_time);
+-	if (delta_time > 0  && (jack_nframes_t)abs(delta_time - cur_buffer_size) > tolerance) {
++	if (delta_time > 0  && abs((int64_t)delta_time - (int64_t)cur_buffer_size) > (int64_t)tolerance) {
+ 		printf("!!! ERROR !!! jack_frame_time seems to return incorrect values cur_buffer_size = %d, delta_time = %d tolerance %d\n", cur_buffer_size, delta_time, tolerance);
+ 	}
+ 

new file mode 100644
index 000000000..a73fe69e1
@@ -0,0 +1,28 @@
+From d3c8e2d8d78899fba40a3e677ed4dbe388d82269 Mon Sep 17 00:00:00 2001
+From: Adrian Knoth <[email protected]>
+Date: Thu, 18 Sep 2014 18:29:23 +0200
+Subject: [PATCH] Fix FTBFS with clang++
+
+Forwarded from http://bugs.debian.org/757820
+
+Downloaded from upstream commit
+https://github.com/jackaudio/jack2/commit/d3c8e2d8d78899fba40a3e677ed4dbe388d82269
+
+Signed-off-by: Bernd Kuhls <[email protected]>
+---
+ common/memops.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/common/memops.c b/common/memops.c
+index 27f6194a..2d416b64 100644
+--- a/common/memops.c
++++ b/common/memops.c
+@@ -198,7 +198,7 @@ static inline __m128i float_24_sse(__m128 s)
+  */
+ static unsigned int seed = 22222;
+ 
+-inline unsigned int fast_rand() {
++static inline unsigned int fast_rand() {
+ 	seed = (seed * 96314165) + 907633515;
+ 	return seed;
+ }