ldap_explode_dn corrupts UTF-8 encoding (ITS#1890)

[ps@psncc.at]

Full_Name: 
Version: 2.1.2
OS: linux 2.2
URL: ftp://ftp.openldap.org/incoming/
Submission from: (NULL) (213.47.128.10)


OpenLDAP 2.1.2 seems to currupt non-ASCII UTF-8 encoded characters.
It actually turns unprintable chars (in the ASCII sense) into \<hexcode>.