Fix language module check.

Add wrap the import command with "  to avoid these kind of error:

$  ruby -rubygems -e require 'csv'
-e:1:in `require': wrong number of arguments (0 for 1) (ArgumentError)
	from -e:1

$ /usr/bin/env perl -e use DBD::mysql
syntax error at -e line 1, at EOF
Execution of -e aborted due to compilation errors.