[Rd] wrong results in dist.binary (library ade4) (PR#4384)

[c.duering at threads.de]

Full_Name: Christian Düring
Version: 1.6.2
OS: win32
Submission from: (NULL) (62.224.59.150)


Function dist.binary in add-on library ade4 yields wrong results due to wrong
association of method number and index formula. 
Examples: 
method=6 should be 5 (S7, Soerensen index)
method=7 should be 6 (S9 index)
Ochiai index is missing

Same in current version of ade4 (ade4_1.04.zip).