Revert "Unset IFS in shell scripts in the linux standalone build and OSX app."

This reverts commit 24125e8dc4.

yoh has a better patch I see

standalone/linux/skel/git

@@ -1,5 +1,4 @@
 #!/bin/sh
-unset IFS
 link="$(readlink -f "$0" 2>/dev/null || readlink "$0")" || true
 if [ -n "$link" ]; then
 	base="$(dirname "$link")"

standalone/linux/skel/git-annex

@@ -1,5 +1,4 @@
 #!/bin/sh
-unset IFS
 link="$(readlink -f "$0" 2>/dev/null || readlink "$0")" || true
 if [ -n "$link" ]; then
 	base="$(dirname "$link")"

standalone/linux/skel/git-annex-shell

@@ -1,5 +1,4 @@
 #!/bin/sh
-unset IFS
 link="$(readlink -f "$0" 2>/dev/null || readlink "$0")" || true
 if [ -n "$link" ]; then
 	base="$(dirname "$link")"

standalone/linux/skel/git-annex-webapp

@@ -1,5 +1,4 @@
 #!/bin/sh
-unset IFS
 link="$(readlink -f "$0" 2>/dev/null || readlink "$0")" || true
 if [ -n "$link" ]; then
 	base="$(dirname "$link")"

standalone/linux/skel/git-receive-pack

@@ -1,5 +1,4 @@
 #!/bin/sh
-unset IFS
 link="$(readlink -f "$0" 2>/dev/null || readlink "$0")" || true
 if [ -n "$link" ]; then
 	base="$(dirname "$link")"

standalone/linux/skel/git-shell

@@ -1,5 +1,4 @@
 #!/bin/sh
-unset IFS
 link="$(readlink -f "$0" 2>/dev/null || readlink "$0")" || true
 if [ -n "$link" ]; then
 	base="$(dirname "$link")"

standalone/linux/skel/git-upload-pack

@@ -1,5 +1,4 @@
 #!/bin/sh
-unset IFS
 link="$(readlink -f "$0" 2>/dev/null || readlink "$0")" || true
 if [ -n "$link" ]; then
 	base="$(dirname "$link")"

standalone/linux/skel/runshell

@@ -3,7 +3,6 @@
 # libraries bundled with this app.
 
 set -e
-unset IFS
 
 os="$(uname -o 2>/dev/null || true)"
 base="$(dirname "$0")"