Added tests for reading symbols that start as integers or ratios.  The tests for ratios fail because I don't but the `/' in the buffer.
Added tests for reading symbols that start as integers or
ratios.  The tests for ratios fail because I don't but the `/'
in the buffer.

clasp-developers/SICL,clasp-developers/SICL,vtomole/SICL,vtomole/SICL,vtomole/SICL,vtomole/SICL,clasp-developers/SICL,clasp-developers/SICL