git: Patch away some /tmp usage

packages/git/build.sh

@@ -3,7 +3,7 @@ TERMUX_PKG_DESCRIPTION="Distributed version control system designed to handle ev
 # less is required as a pager for git log, and the busybox less does not handle used escape sequences.
 TERMUX_PKG_DEPENDS="libcurl, less"
 TERMUX_PKG_VERSION=2.8.1
-TERMUX_PKG_BUILD_REVISION=2
+TERMUX_PKG_BUILD_REVISION=3
 TERMUX_PKG_SRCURL=https://www.kernel.org/pub/software/scm/git/git-${TERMUX_PKG_VERSION}.tar.xz
 ## This requires a working $TERMUX_PREFIX/bin/sh on the host building:
 TERMUX_PKG_EXTRA_CONFIGURE_ARGS="--without-tcltk --with-curl --with-shell=$TERMUX_PREFIX/bin/sh ac_cv_header_libintl_h=no ac_cv_fread_reads_directories=yes ac_cv_snprintf_returns_bogus=yes"

packages/git/tempfile.c.patch

@@ -0,0 +1,12 @@
+diff -u -r ../git-2.8.1/tempfile.c ./tempfile.c
+--- ../git-2.8.1/tempfile.c	2016-04-03 15:07:18.000000000 -0400
++++ ./tempfile.c	2016-04-28 07:22:47.339509915 -0400
+@@ -170,7 +170,7 @@
+ 
+ 	tmpdir = getenv("TMPDIR");
+ 	if (!tmpdir)
+-		tmpdir = "/tmp";
++		tmpdir = "@TERMUX_PREFIX@/tmp";
+ 
+ 	strbuf_addf(&tempfile->filename, "%s/%s", tmpdir, template);
+ 	tempfile->fd = git_mkstemps_mode(tempfile->filename.buf, suffixlen, mode);

packages/git/wrapper.c.patch

@@ -0,0 +1,21 @@
+diff -u -r ../git-2.8.1/wrapper.c ./wrapper.c
+--- ../git-2.8.1/wrapper.c	2016-04-03 15:07:18.000000000 -0400
++++ ./wrapper.c	2016-04-28 07:24:14.514073661 -0400
+@@ -437,7 +437,7 @@
+ 
+ 	tmp = getenv("TMPDIR");
+ 	if (!tmp)
+-		tmp = "/tmp";
++		tmp = "@TERMUX_PREFIX@/tmp";
+ 	n = snprintf(path, len, "%s/%s", tmp, template);
+ 	if (len <= n) {
+ 		errno = ENAMETOOLONG;
+@@ -454,7 +454,7 @@
+ 
+ 	tmp = getenv("TMPDIR");
+ 	if (!tmp)
+-		tmp = "/tmp";
++		tmp = "@TERMUX_PREFIX@/tmp";
+ 	n = snprintf(path, len, "%s/%s", tmp, template);
+ 	if (len <= n) {
+ 		errno = ENAMETOOLONG;