Add (lassik ...) prefix to command-line

command-line-test.scm

@@ -1,4 +1,4 @@
-(import (scheme base) (command-line) (srfi 64))
+(import (scheme base) (srfi 64) (lassik command-line))
 
 (test-begin "command-line")
 

command-line.sld

@@ -1,4 +1,4 @@
-(define-library (command-line)
+(define-library (lassik command-line)
   (export join-posix-command-line
           join-windows-command-line)
   (import (scheme base))