bug#13534: add --language argument breaks -l

[Daniel Llorens]

There is an obvious bug in faabd16… in the handling of "-l"

,arg0 should be ,(car args)

However, even after fixing this, there are problems with the load path

> cat x.scm
(define hello 1) ^D
> guile -l x.scm
[backtrace ...] Unable to find file "ice-9/x.scm" in load path
> guile -L /home/daniel/ -l x.scm
[backtrace ...] Unable to find file "ice-9/x.scm" in load path

I can fix this by putting back load instead of (@@ (ice-9 command-line) 
load/lang), but I don't understand why this should be. load/lang just calls 
load, so it must be some scope issue.