* module/srfi/srfi-45.scm (promise?): Export.
* doc/ref/srfi-modules.texi (SRFI-45): Update docs.
* test-suite/tests/srfi-45.test: Add test. Add FSF copyright for 2010
and 2013. Add missing year to André van Tonder's copyright notice.
* module/ice-9/boot-9.scm (%cond-expand-features): Remove redundant list
of feature identifiers in the comment. Explain more clearly what
belongs in this list. Remove srfi-6.
* module/srfi/srfi-4.scm, module/srfi/srfi-27.scm,
module/srfi/srfi-31.scm, module/srfi/srfi-38.scm,
module/srfi/srfi-39.scm, module/srfi/srfi-42.scm,
module/srfi/srfi-45.scm, module/srfi/srfi-67.scm: Add missing
'cond-expand-provide'.
* module/srfi/srfi-69.scm: Fix erroneous 'cond-expand-provide'.
* doc/ref/srfi-modules.texi (SRFI-0): Update the list of features in
Guile core.
* module/srfi/srfi-45.scm (eager): Accept any number of arguments.
Store the list of arguments in the value record. Previously, only one
argument was accepted, and that value was stored in the value record.
(delay): Support expressions that return any number of arguments.
(force): Return the list of values stored in the value record.
(promise?): Export.
* doc/ref/srfi-modules.texi (SRFI-45): Update docs. Remove typing
for simplicity in discussing multiple values.
* test-suite/tests/srfi-45.test: Add tests. Add FSF copyright for 2010
and 2013. Add missing year to André van Tonder's copyright notice.
* module/srfi/srfi-45.scm: New file, containing the reference implementation of
SRFI 45, slightly adapted to use SRFI-9.
* module/Makefile.am (SRFI_SOURCES): Added srfi/srfi-45.scm.
* test-suite/tests/srfi-45.test: New file.
* test-suite/Makefile.am (SCM_TESTS): Add tests/srfi-45.test.
* doc/ref/srfi-modules.texi (SRFI-45): New node and subsection;
essentially a shortended transcript of the SRFI-45 specification.
