e2fsprogs: fixed to build while using a libc which is not providing fallocate()

Note:

Without this patch compiling e2fsprogs 1.42 fails in the case the linux
kernel headers provide linux/falloc.h but the libc is not implementing
fallocate() as it is still the case with latest versions of uClibc.

----------------------------snip-----------------------------------------
        LD e2fsck
../lib/libext2fs.so: undefined reference to `fallocate'
collect2: ld returned 1 exit status
----------------------------snip-----------------------------------------

The above build log snippet is from a build using linux 3.0.16 kernel
headers and uClibc 0.9.32.1

filesystem/e2fsprogs/e2fsprogs-1.42-no-fallocate.patch

@@ -0,0 +1,53 @@
+# --- SDE-COPYRIGHT-NOTE-BEGIN ---
+# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
+#
+# Filename: package/.../e2fsprogs/e2fsprogs-1.42-no-fallocate.patch
+# Copyright (C) 2012 The OpenSDE Project
+#
+# More information can be found in the files COPYING and README.
+#
+# This patch file is dual-licensed. It is available under the license the
+# patched project is licensed under, as long as it is an OpenSource license
+# as defined at http://www.opensource.org/ (e.g. BSD, X11) or under the terms
+# of the GNU General Public License as published by the Free Software
+# Foundation; either version 2 of the License, or (at your option) any later
+# version.
+# --- SDE-COPYRIGHT-NOTE-END ---
+
+From 19a6795685b1c8e855766f76e96d17a8b5398a59 Mon Sep 17 00:00:00 2001
+From: Christian Wiese <chris@opensde.org>
+Date: Sat, 14 Jan 2012 10:41:48 +0100
+Subject: [PATCH] libext2fs: fix build in case the libc is not providing fallocate()
+
+Without this patch compiling e2fsprogs 1.42 fails in the case the linux
+kernel headers provide linux/falloc.h but the libc is not implementing
+fallocate() as it is still the case with latest versions of uClibc.
+
+----------------------------snip-----------------------------------------
+        LD e2fsck
+../lib/libext2fs.so: undefined reference to `fallocate'
+collect2: ld returned 1 exit status
+----------------------------snip-----------------------------------------
+
+The above build log snippet is from a build using linux 3.0.16 kernel
+headers and uClibc 0.9.32.1
+---
+ lib/ext2fs/unix_io.c |    2 +-
+ 1 files changed, 1 insertions(+), 1 deletions(-)
+
+diff --git a/lib/ext2fs/unix_io.c b/lib/ext2fs/unix_io.c
+index 5337022..6ee5837 100644
+--- a/lib/ext2fs/unix_io.c
++++ b/lib/ext2fs/unix_io.c
+@@ -895,7 +895,7 @@ static errcode_t unix_discard(io_channel channel, unsigned long long block,
+ 		goto unimplemented;
+ #endif
+ 	} else {
+-#ifdef FALLOC_FL_PUNCH_HOLE
++#if defined HAVE_FALLOCATE && defined FALLOC_FL_PUNCH_HOLE
+ 		/*
+ 		 * If we are not on block device, try to use punch hole
+ 		 * to reclaim free space.
+-- 
+1.7.2.3
+