[FFmpeg-cvslog] configure: add cleanws() function

[Mans Rullgard]

ffmpeg | branch: master | Mans Rullgard <mans at mansr.com> | Sun Feb 13 13:06:53 2011 +0000| [8429368d22e3dc046b1ec0311c292e0e70ee1a9d] | committer: Michael Niedermayer

configure: add cleanws() function

This function removes leading and trailing spaces and collapses
multiple spaces into one.

Signed-off-by: Mans Rullgard <mans at mansr.com>
(cherry picked from commit bb7a22b5840e56c034227ad596b1165c03f2da27)

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=8429368d22e3dc046b1ec0311c292e0e70ee1a9d
---

 configure |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/configure b/configure
index 8a32709..238bf01 100755
--- a/configure
+++ b/configure
@@ -313,6 +313,10 @@ sh_quote(){
     echo "$v"
 }
 
+cleanws(){
+    echo "$@" | sed 's/^ *//;s/  */ /g;s/ *$//'
+}
+
 filter(){
     pat=$1
     shift