srfi-1 take and drop

[Kevin Ryde]

Am I right that srfi-1 take and drop are the same as the core
list-head and list-tail?  In which case perhaps,

        * srfi-1.scm (take): Make this an alias for list-head.
        (drop): Make this an alias for list-tail.

        * tests/srfi-1.test: New file, exercising take and drop.
        * Makefile.am (SCM_TESTS): Add it.

The only difference I could spot in the current implementations was
list-head and list-tail throw an exception for negative n, where take
and drop code quietly treat that as 0.  srfi-1 doesn't say anything
about negatives as far as I can tell, so presumably there's a free
choice.

srfi-1.test
Description: Text document

srfi-1.scm.take-drop.diff
Description: Text document