mpd: use $PREFIX/var/run instead of $TMPDIR

See https://github.com/termux/termux-packages/issues/4206

packages/mpd/build.sh

@@ -2,7 +2,7 @@ TERMUX_PKG_HOMEPAGE=https://www.musicpd.org
 TERMUX_PKG_DESCRIPTION="Music player daemon"
 TERMUX_PKG_LICENSE="GPL-2.0"
 TERMUX_PKG_VERSION=0.21.13
-TERMUX_PKG_REVISION=4
+TERMUX_PKG_REVISION=5
 TERMUX_PKG_SRCURL=https://github.com/MusicPlayerDaemon/MPD/archive/v$TERMUX_PKG_VERSION.tar.gz
 TERMUX_PKG_SHA256=0c71ff34aa4def30cd931977cbfe3deb6ec815a726b8c5343f1b8e5707136ebf
 TERMUX_PKG_DEPENDS="libc++, libcurl, libid3tag, libopus, libpulseaudio, libmpdclient, openal-soft, libvorbis, libsqlite, ffmpeg, libmp3lame, libbz2, libogg, libnfs, zlib"

packages/mpd/doc-mpdconf.example.patch

@@ -69,7 +69,7 @@ diff -u -r ../MPD-0.21.3/doc/mpdconf.example ./doc/mpdconf.example
  #
  # And for Unix Socket
 -#bind_to_address		"~/.mpd/socket"
-+bind_to_address		"@TERMUX_PREFIX@/tmp/mpd.socket"
++bind_to_address		"@TERMUX_PREFIX@/var/run/mpd.socket"
  #
  # This setting is the TCP port that is desired for the daemon to get assigned
 -# to.
@@ -191,7 +191,7 @@ diff -u -r ../MPD-0.21.3/doc/mpdconf.example ./doc/mpdconf.example
 +audio_output {
 +        type            "fifo"
 +        name            "ncmpcpp visualizer"
-+        path            "~/../usr/tmp/mpd.fifo"
++        path            "@TERMUX_PREFIX@/var/run/mpd.fifo"
 +        format          "44100:16:2"
 +	enabled		"no"
 +}

packages/mpd/src-fs-io-FileOutputStream.hxx.patch

@@ -1,7 +1,6 @@
-diff -u -r ../MPD-0.21.3/src/fs/io/FileOutputStream.hxx ./src/fs/io/FileOutputStream.hxx
+--- ../FileOutputStream.hxx.orig	2019-08-24 20:56:41.969642005 +0200
---- ../MPD-0.21.3/src/fs/io/FileOutputStream.hxx	2018-11-16 12:27:58.000000000 +0000
++++ ./src/fs/io/FileOutputStream.hxx	2019-08-12 21:47:53.854420002 +0200
-+++ ./src/fs/io/FileOutputStream.hxx	2018-12-31 01:08:58.577798371 +0000
+@@ -45,7 +45,7 @@
-@@ -46,7 +46,7 @@
  #include <windows.h>
  #endif