* module/rnrs/base.scm (error, assert): Define -- they were missing.
(assertion-violation): Properly treat a #f `who' argument.
* module/rnrs/conditions.scm (condition): Use `assertion-violation'
instead of the undefined `raise'.
(define-condition-type): Fix for multiple fields.
* test-suite/tests/r6rs-conditions.test: Test accessors of a
multiple-field condition. Also import `(rnrs base)' to allow
stand-alone running of the tests; apparently the `@' references
scattered throughout the R6RS modules make the libraries sensitive to
their load order -- for instance, trying to load `(rnrs conditions)'
before `(rnrs base)' is loaded fails.
* module/rnrs/records/inspection.scm: Use `assertion-violation' instead
of an explicit `raise'.
* module/rnrs/records/syntactic.scm (process-fields): Use
`syntax-violation' instead of bogus invocations of `error'.
accessors.
* module/rnrs/conditions.scm (define-condition-type): The generated
accessors should be condition accessors, which know how to unpack a
compound condition; these can then delegate to the appropriate record
accessors.
* test-suite/tests/r6rs-conditions.test: New test case to verify above.
(rnrs records procedural).
* module/rnrs/6/conditions.scm: Fix export of
make-implementation-restriction-violation; remove dependency on
(rnrs syntax-case); remove redundant function
compound-condition-components; rewrite define-condition-type using
syntax-rules instead of syntax-case.
* module/rnrs/records/6/procedural.scm: Remove serious-condition?,
violation? and assertion-violation? predicates, since they're not true
condition predicates.
* test-suite/Makefile.am: Add tests/r6rs-conditions.test to SCM_TESTS.
* test-suite/tests/r6rs-conditions.test: New file.
