PKG: need more strict checking python version

SuperBuild/Packaging/Files/linux_pkgsetup.in

@@ -115,13 +115,22 @@ python_minor_version=$($OTB_PYTHON_EXE -c "import sys;print(sys.version_info[1])
 python_patch_version=$($OTB_PYTHON_EXE -c "import sys;print(sys.version_info[2])")
 python_version="$python_major_version.$python_minor_version.$python_patch_version"
 
-if [ "$python_major_version" -gt 2 ]; then
+python_check_failed() {
+    printf %s\\n "*****Error occured during installation******"
     printf %s\\n "OTB python bindings requires python2.6 or python2.7 but current detected python version is $python_version"
     printf %s\\n "If you have python2.6 or Python2.7 installed in your system "
     printf %s\\n "You should set OTB_PYTHON_EXE and re-run this installation script."
     printf %s\\n "eg: OTB_PYTHON_EXE=/path/to/python2.7 ./OTB-X.Y-Linux64.run"
-    exit 0;
+    exit 1;
+}
+if [ "$python_major_version" -gt 2 ]; then
+python_check_failed
 fi
+
+if [ "$python_minor_version" -lt 5 ]; then
+python_check_failed
+fi
+
 python_INSTSONAME=$($OTB_PYTHON_EXE -c "import sys; from distutils import sysconfig; print (sysconfig.get_config_var('INSTSONAME'));")
 
 python_lib_dirs="/usr/lib /usr/lib64 /usr/lib/x86_64-linux-gnu"