zsh: Fix bogus nice() warning (#1151)

packages/zsh/Src-exec.c.patch

@@ -0,0 +1,36 @@
+diff -u -r ../zsh-5.3/Src/exec.c ./Src/exec.c
+--- ../zsh-5.3/Src/exec.c	2016-12-06 20:21:39.000000000 +0100
++++ ./Src/exec.c	2017-07-21 00:51:47.226997418 +0200
+@@ -518,7 +518,7 @@
+ 		    } else if (eno == ENOEXEC) {
+ 			argv[-1] = "sh";
+ 			winch_unblock();
+-			execve("/bin/sh", argv - 1, newenvp);
++			execve("@TERMUX_PREFIX@/bin/sh", argv - 1, newenvp);
+ 		    }
+ 		} else if (eno == ENOEXEC) {
+ 		    for (t0 = 0; t0 != ct; t0++)
+@@ -527,7 +527,7 @@
+ 		    if (t0 == ct) {
+ 			argv[-1] = "sh";
+ 			winch_unblock();
+-			execve("/bin/sh", argv - 1, newenvp);
++			execve("@TERMUX_PREFIX@/bin/sh", argv - 1, newenvp);
+ 		    }
+ 		}
+ 	    } else
+@@ -3295,9 +3295,12 @@
+ 	    holdintr();
+ #ifdef HAVE_NICE
+ 	/* Check if we should run background jobs at a lower priority. */
+-	if ((how & Z_ASYNC) && isset(BGNICE))
+-	    if (nice(5) < 0)
++	if ((how & Z_ASYNC) && isset(BGNICE)) {
++	    errno = 0;
++	    nice(5);
++	    if (errno != 0)
+ 		zwarn("nice(5) failed: %e", errno);
++	}
+ #endif /* HAVE_NICE */
+ 
+     } else if (is_cursh) {

packages/zsh/build.sh

@@ -2,7 +2,7 @@ TERMUX_PKG_HOMEPAGE=https://www.zsh.org
 TERMUX_PKG_DESCRIPTION="Shell with lots of features"
 _FOLDERVERSION=5.3
 TERMUX_PKG_VERSION=${_FOLDERVERSION}.1
-TERMUX_PKG_REVISION=2
+TERMUX_PKG_REVISION=3
 TERMUX_PKG_SRCURL=https://downloads.sourceforge.net/project/zsh/zsh/$_FOLDERVERSION/zsh-${_FOLDERVERSION}.tar.xz
 TERMUX_PKG_SHA256=76f82cfd5ce373cf799a03b6f395283f128430db49202e3e3f512fb5a19d6f8a
 TERMUX_PKG_RM_AFTER_INSTALL="bin/zsh-${_FOLDERVERSION}"

packages/zsh/exec_bin_sh.patch

@@ -1,21 +0,0 @@
-diff -u -r ../zsh-5.0.5/Src/exec.c ./Src/exec.c
---- ../zsh-5.0.5/Src/exec.c	2014-01-02 18:34:49.000000000 +0100
-+++ ./Src/exec.c	2014-02-03 02:51:11.000000000 +0100
-@@ -508,7 +508,7 @@
- 		    } else if (eno == ENOEXEC) {
- 			argv[-1] = "sh";
- 			winch_unblock();
--			execve("/bin/sh", argv - 1, newenvp);
-+			execve("@TERMUX_PREFIX@/bin/sh", argv - 1, newenvp);
- 		    }
- 		} else if (eno == ENOEXEC) {
- 		    for (t0 = 0; t0 != ct; t0++)
-@@ -517,7 +517,7 @@
- 		    if (t0 == ct) {
- 			argv[-1] = "sh";
- 			winch_unblock();
--			execve("/bin/sh", argv - 1, newenvp);
-+			execve("@TERMUX_PREFIX@/bin/sh", argv - 1, newenvp);
- 		    }
- 		}
- 	    } else