TLS_DHE_DSS_WITH_RC4_128_SHA is not export grade.

Although it is mentioned in the TLS-WG draft on 56-bit export suites,
TLS_DHE_DSS_WITH_RC4_128_SHA uses 128-bit keys and is not export grade.

Note in the table at heading 4 it is lacking an IsExportable asterisk,
and the Cipher is RC4_128 rather than RC4_56.
Comment for TLS_DHE_DSS_WITH_RC4_128_SHA key size
Merge pull request #21 from ab/ab-export-grade

TLS_DHE_DSS_WITH_RC4_128_SHA is not export grade.