gnu: cursynth: Upgrade to 1.5.

* gnu/packages/cursynth.scm (cursynth)[source]: Upgrade to 1.5.  New
  'patches' field.
* gnu/packages/patches/cursynth-wave-rand.patch: New patch.
* gnu-system.am (dist_patch_DATA): Add it.

gnu-system.am

@@ -283,6 +283,7 @@ dist_patch_DATA =						\
   gnu/packages/patches/cssc-gets-undeclared.patch               \
   gnu/packages/patches/cssc-missing-include.patch               \
   gnu/packages/patches/curl-fix-test172.patch			\
+  gnu/packages/patches/cursynth-wave-rand.patch			\
   gnu/packages/patches/dbus-localstatedir.patch			\
   gnu/packages/patches/diffutils-gets-undeclared.patch		\
   gnu/packages/patches/dmd-getpw.patch				\

gnu/packages/cursynth.scm

@@ -29,14 +29,15 @@
 (define-public cursynth
   (package
     (name "cursynth")
-    (version "1.4")
+    (version "1.5")
     (source
      (origin
       (method url-fetch)
       (uri (string-append "mirror://gnu/cursynth/cursynth-"
                           version ".tar.gz"))
       (sha256
-       (base32 "1p9c54v9b0jjx33sammqsdi5xw65csly4cr1i08wv9x6r2yib55m"))))
+       (base32 "1dhphsya41rv8z6yqcv9l6fwbslsds4zh1y56zizi39nd996d40v"))
+      (patches (list (search-patch "cursynth-wave-rand.patch")))))
     (build-system gnu-build-system)
     (native-inputs `(("pkg-config" ,pkg-config)))
     ;; TODO: See https://github.com/iyoko/cursynth/issues/4 which currently

gnu/packages/patches/cursynth-wave-rand.patch

@@ -0,0 +1,12 @@
+Related to https://github.com/mtytel/cursynth/issues/9
+
+--- a/mopo/src/wave.h	2014-06-25 14:10:57.827369578 -0500
++++ b/mopo/src/wave.h	2014-06-25 14:08:15.795376354 -0500
+@@ -19,6 +19,7 @@
+ #define WAVE_H
+ 
+ #include "mopo.h"
++#include <cstdlib>
+ #include <cmath>
+ 
+ #define LOOKUP_SIZE 2048