Take build_suffix into account in pkg-config files.

patch by Charles Yates, charles.yates gmail com


git-svn-id: file:///var/local/repositories/ffmpeg/trunk@15858 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

configure

@@ -2346,7 +2346,7 @@ fi
 
 pkgconfig_generate(){
 name=$1
-shortname=${name#lib}
+shortname=${name#lib}${build_suffix}
 comment=$2
 version=$3
 libs=$4