radare2: fix path to /bin/sh and /usr/bin/diff

packages/radare2/build.sh

@@ -2,6 +2,7 @@ TERMUX_PKG_HOMEPAGE=https://rada.re
 TERMUX_PKG_DESCRIPTION="Advanced Hexadecimal Editor"
 TERMUX_PKG_LICENSE="GPL-3.0"
 TERMUX_PKG_VERSION=3.3.0
+TERMUX_PKG_REVISION=1
 TERMUX_PKG_SHA256=3c092bdf8676d7d49537926258c50557bca98d7d669babfed6113ff82c403bcb
 TERMUX_PKG_SRCURL=https://github.com/radare/radare2/archive/$TERMUX_PKG_VERSION.tar.gz
 TERMUX_PKG_DEPENDS="libuv"

packages/radare2/libr-util-diff.c.patch

@@ -0,0 +1,12 @@
+diff -uNr radare2-3.2.1/libr/util/diff.c radare2-3.2.1.mod/libr/util/diff.c
+--- radare2-3.2.1/libr/util/diff.c	2019-01-08 18:14:43.000000000 +0200
++++ radare2-3.2.1.mod/libr/util/diff.c	2019-03-02 03:17:18.566391827 +0200
+@@ -145,7 +145,7 @@
+ 	char* err = NULL;
+ 	char* out = NULL;
+ 	int out_len;
+-	(void)r_sys_cmd_str_full ("/usr/bin/diff -u .a .b", NULL, &out, &out_len, &err);
++	(void)r_sys_cmd_str_full ("@TERMUX_PREFIX@/bin/diff -u .a .b", NULL, &out, &out_len, &err);
+ 	r_file_rm (".a");
+ 	r_file_rm (".b");
+ 	free (err);

packages/radare2/libr-util-sandbox.c.patch

@@ -0,0 +1,12 @@
+diff -uNr radare2-3.2.1/libr/util/sandbox.c radare2-3.2.1.mod/libr/util/sandbox.c
+--- radare2-3.2.1/libr/util/sandbox.c	2019-01-08 18:14:43.000000000 +0200
++++ radare2-3.2.1.mod/libr/util/sandbox.c	2019-03-02 02:42:52.796061199 +0200
+@@ -154,7 +154,7 @@
+ 		return system (x);
+ #endif
+ 	}
+-	return execl ("/bin/sh", "sh", "-c", x, (const char*)NULL);
++	return execl ("@TERMUX_PREFIX@/bin/sh", "sh", "-c", x, (const char*)NULL);
+ #else
+ 	#include <spawn.h>
+ 	if (n && !strchr (x, '|')) {