Harmonise 0install.sh and pkg.sh script

 + Same commit id length for both scripts.

0install.sh

@@ -18,7 +18,7 @@ if [ ! -d $dist ]; then
   mkdir $dist
 fi
 # Archive name, _the bin emphasis the difference with source tarball
-id=`git describe --abbrev=40 --candidates=50 HEAD`
+id=`git describe --abbrev=10 --candidates=50 HEAD`
 name=oclaunch-${id}_$(arch)_bin
 final_binary_path=./$name/oclaunch
 final_binary_name=oclaunch