This partially reverts commit 6e9f3c2676
(Tue May 3 2005).
* module/srfi/srfi-1.scm (break, break!): New procedures.
* srfi/srfi-1.c (scm_srfi1_break, scm_srfi1_break_x): Rewrite as
proxies to the corresponding Scheme procedures.
* test-suite/standalone/test-srfi-1.c (failure): New function.
(tests): Add `scm_srfi1_break' test. Use `failure'.