* module/Makefile.am: Add rnrs/6/base.scm and rnrs/6/control.scm to RNRS_SOURCES. * module/rnrs/6/base.scm, control.scm: New files. * test-suite/Makefile.am: Add tests/r6rs-control.test to SCM_TESTS. * test-suite/tests/r6rs-control.test: New file.