softethervpn5: update to 5.01.9671

* update to 5.01.9671
* switch to release tar's
* add cmake iconv and musl patches

Signed-off-by: Andy Walsh <andy.walsh44+github@gmail.com>
(cherry-pick from 46c320f18f)

net/softethervpn5/patches/001-musl-poll-fix.patch

@@ -0,0 +1,27 @@
+From a4ed6560017d0b9edcd7cab93ca05d80f794ec10 Mon Sep 17 00:00:00 2001
+From: Rosen Penev <rosenp@gmail.com>
+Date: Wed, 10 Jul 2019 17:01:01 -0700
+Subject: [PATCH] Mayaqua: Replace GNU specific sys/poll.h header with POSIX
+ poll.h
+
+Fixes warning from the musl libc:
+
+warning redirecting incorrect #include <sys/poll.h> to <poll.h>
+---
+ src/Mayaqua/Mayaqua.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/Mayaqua/Mayaqua.h b/src/Mayaqua/Mayaqua.h
+index 0f46d52a..63c2edc3 100644
+--- a/src/Mayaqua/Mayaqua.h
++++ b/src/Mayaqua/Mayaqua.h
+@@ -157,8 +157,8 @@ int PASCAL WinMain(HINSTANCE hInst, HINSTANCE hPrev, char *CmdLine, int CmdShow)
+ #ifdef	UNIX_SOLARIS
+ #include <sys/filio.h>
+ #endif	// UNIX_SOLARIS
+-#include <sys/poll.h>
+ #include <sys/resource.h>
++#include <poll.h>
+ #include <pthread.h>
+ #ifdef	UNIX_LINUX
+ #include <sys/prctl.h>

net/softethervpn5/patches/002-iconv-defines-fix.patch

@@ -0,0 +1,11 @@
+--- a/src/Mayaqua/Mayaqua.h	2019-07-11
++++ b/src/Mayaqua/Mayaqua.h	2019-07-11
+@@ -178,7 +178,7 @@ int PASCAL WinMain(HINSTANCE hInst, HINS
+ #include <ifaddrs.h>
+ #endif	// MAYAQUA_SUPPORTS_GETIFADDRS
+ 
+-#ifdef	UNIX_LINUX
++#if 0
+ typedef void *iconv_t;
+ iconv_t iconv_open (__const char *__tocode, __const char *__fromcode);
+ size_t iconv (iconv_t __cd, char **__restrict __inbuf,

net/softethervpn5/patches/003-iconv-cmake-fix.patch

@@ -0,0 +1,11 @@
+--- a/src/Mayaqua/CMakeLists.txt	2019-07-10
++++ b/src/Mayaqua/CMakeLists.txt	2019-07-11
+@@ -59,7 +59,7 @@ if(UNIX)
+   find_package(ZLIB REQUIRED)
+ 
+   # In some cases libiconv is not included in libc
+-  find_library(LIB_ICONV iconv)
++  find_library(LIB_ICONV iconv HINTS "${ICONV_LIB_PATH}")
+ 
+   find_library(LIB_RT rt)
+