[FFmpeg-cvslog] configure: Replace `pr` since it is not provided by busybox

[Kylie McClain]

ffmpeg | branch: master | Kylie McClain <somasis at exherbo.org> | Mon Nov 23 14:06:50 2015 -0500| [bf12a81cc67d62dd45c58e29fa0e9177331cc151] | committer: Luca Barbato

configure: Replace `pr` since it is not provided by busybox

While pr is a valid POSIX.1 command, its usage in configure
is a little borderline and is possible to replace it with
printf.

Bug-Id: 913

Signed-off-by: Luca Barbato <lu_zero at gentoo.org>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=bf12a81cc67d62dd45c58e29fa0e9177331cc151
---

 configure |    8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/configure b/configure
index 6ec7586..615a648 100755
--- a/configure
+++ b/configure
@@ -343,7 +343,11 @@ log(){
 
 log_file(){
     log BEGIN $1
-    pr -n -t $1 >> $logfile
+    i=1
+    while read line; do
+        printf '%5s   %s\n' "${i}" "${line}"
+        i=$(($i+1))
+    done < $1 >> $logfile
     log END $1
 }
 
@@ -2535,7 +2539,7 @@ die_unknown(){
 }
 
 print_3_columns() {
-    cat | tr ' ' '\n' | sort | pr -r -3 -t
+    printf "%-25s %-25s %-25s\n" $(cat | tr ' ' '\n' | sort)
 }
 
 show_list() {