taylanub/scheme-srfi: SRFI implementations as libraries in standard Scheme.

Taylan Ulrich B 0e2843b3b9 srfi-tests/54.sld: Add missing `else' to `cond-expand' usage		10 lat temu
..
2.sld	b1333aa2cf Clean up tests, since SRFI-64 is now smarter	10 lat temu
26.sld	b1333aa2cf Clean up tests, since SRFI-64 is now smarter	10 lat temu
31.sld	54025aefa2 Specify a strict test suite format	10 lat temu
54.sld	0e2843b3b9 srfi-tests/54.sld: Add missing `else' to `cond-expand' usage	10 lat temu
aux.sld	b1333aa2cf Clean up tests, since SRFI-64 is now smarter	10 lat temu