fix(main/zssh): fix build by applying patches from Arch Linux

- Patches copied and pasted from c0eba9c489/

packages/zssh/build.sh

@@ -3,7 +3,7 @@ TERMUX_PKG_DESCRIPTION="A program for interactively transferring files to a remo
 TERMUX_PKG_LICENSE="GPL-2.0"
 TERMUX_PKG_MAINTAINER="@termux"
 TERMUX_PKG_VERSION=1.5c
-TERMUX_PKG_REVISION=1
+TERMUX_PKG_REVISION=2
 TERMUX_PKG_SRCURL=https://downloads.sourceforge.net/zssh/zssh-${TERMUX_PKG_VERSION}.tgz
 TERMUX_PKG_SHA256=a2e840f82590690d27ea1ea1141af509ee34681fede897e58ae8d354701ce71b
 TERMUX_PKG_DEPENDS="libandroid-glob, lrzsz, openssh, readline"

packages/zssh/zssh-1.5c-Use-GNU-openpty-library-for-pty.h.patch

@@ -0,0 +1,53 @@
+From: Ben Wong <ben@wongs.net>
+Date: Tue, 25 Sep 2007 01:48:30 -0700
+Subject: Use GNU openpty library for pty.h
+
+---
+ configure.in | 11 +++++++++--
+ openpty.c    |  4 ++++
+ 2 files changed, 13 insertions(+), 2 deletions(-)
+
+diff --git a/configure.in b/configure.in
+index a8f1441..af2cad0 100644
+--- a/configure.in
++++ b/configure.in
+@@ -57,7 +57,7 @@ AC_CONFIG_HEADER(config.h)
+ AC_HEADER_STDC
+ AC_HEADER_SYS_WAIT
+ AC_CHECK_HEADERS(fcntl.h paths.h sys/ioctl.h sys/time.h termios.h unistd.h \
+-	err.h sys/cdefs.h sys/param.h util.h stropts.h)
++	err.h sys/cdefs.h sys/param.h util.h stropts.h pty.h)
+ 
+ 
+ 
+@@ -97,7 +97,14 @@ AC_CHECK_FUNCS(strdup getpt isastream tcsetpgrp)
+ 
+ 
+ dnl Check what is available for tty/pty allocation 
+-AC_CHECK_FUNCS(_getpty getpseudotty openpty grantpt unlockpt)
++AC_CHECK_FUNCS(_getpty getpseudotty grantpt unlockpt)
++AC_CHECK_FUNCS(openpty,,
++	[AC_CHECK_LIB(util,openpty,
++		[AC_DEFINE(HAVE_OPENPTY)
++		LIBS="$LIBS -lutil"]
++	)])
++
++
+ AC_MSG_CHECKING(for pseudo ttys)
+ if test -c /dev/getpty && test $ac_cv_func_getpseudotty = yes
+ then
+diff --git a/openpty.c b/openpty.c
+index 42cb203..0b8a642 100644
+--- a/openpty.c
++++ b/openpty.c
+@@ -25,6 +25,10 @@ static char	gl_slavename[GL_SLAVENAMELEN + 1] = {0};
+ #include <util.h>
+ #endif
+ 
++#ifdef HAVE_PTY_H
++#include <pty.h>
++#endif
++
+ void	getmaster()
+ {
+ #ifdef DEBUG

packages/zssh/zssh-1.5c-c99.patch

@@ -0,0 +1,22 @@
+Add missing entry for HAVE_PTY_H in config.h.  Without it, the
+generated config.h will not define HAVE_PTY_H, and <pty.h> is not
+included in openpty.c.  This leads to an implicit declaration of the
+openpty function, causing a C99 compatibility problem.
+
+This should go away on its own if upstream ever does a new upstream
+release, as config.h.in is usually generated by autoheader.
+
+diff --git a/config.h.in b/config.h.in
+index 2d863e29d64848bf..c2e0cc979dc0fa56 100644
+--- a/config.h.in
++++ b/config.h.in
+@@ -79,6 +79,9 @@
+ /* Define if you have the <paths.h> header file.  */
+ #undef HAVE_PATHS_H
+ 
++/* Define if you have the <pty.h> header file.  */
++#undef HAVE_PTY_H
++
+ /* Define if you have the <readline/history.h> header file.  */
+ #undef HAVE_READLINE_HISTORY_H
+ 

packages/zssh/zssh-1.5c-replace-CPPFunction-call-with-rl_completion_func_t.patch

@@ -0,0 +1,22 @@
+From: YuanQing Su <syq@debian.org>
+Date: Mon, 21 Jul 2014 08:22:29 +0000
+Subject: replace CPPFunction call with rl_completion_func_t
+
+This closes #741761.
+---
+ completion.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/completion.c b/completion.c
+index 98e714a..de44329 100644
+--- a/completion.c
++++ b/completion.c
+@@ -53,7 +53,7 @@ void	initialize_readline()
+     so that if zssh_completion() fails nothing is completed */
+    rl_completion_entry_function = fake_generator;
+    /* Tell the completer that we want a crack first. */
+-   rl_attempted_completion_function = (CPPFunction *) zssh_completion;
++   rl_attempted_completion_function = (rl_completion_func_t *) zssh_completion;
+    
+ }
+