misc: Make the shell launcher use the same python interpreter than setup.py.

setup.py

@@ -57,6 +57,8 @@ class custom_install(install):
                     dest_line = 'DAEMON=""\n' #we want to launch sat as a daemon
                 elif ori_line.startswith('TAP_PATH='):
                     dest_line = 'TAP_PATH="%s/"\n' % run_dir
+                elif ori_line.startswith('PYTHON='):
+                    dest_line = 'PYTHON="%s"\n' % sys.executable
                 else:
                     dest_line = ori_line
                 sh_buffer += dest_line

src/sat.sh

@@ -15,9 +15,10 @@ if [ $# -eq 1 ];then
 fi
 
 NAME='sat'
+PYTHON='python'
 
 #We use python to parse config files
-eval `python<<PYTHONEND
+eval `"$PYTHON" << PYTHONEND
 from ConfigParser import SafeConfigParser
 from os.path import expanduser, join
 import sys