LDAP extended and revamped

Here's a new patch to the current LDAP code that takes into account the recent discussion on the subject. The LDAP code design remains unchanged, it consists of two layers: - a low level layer that closely matches the C LDAP API. These functions that used to be named `*-internal' are now named more simply: `ldap-open', `ldap-close', `ldap-search', `ldap-add', `ldap-modify'. They should be used directly for very specific purposes (such as multiple operations on a connection) only. - a higher-level layer provides a more convenient way to access LDAP directories hiding the subtleties of handling the connection, translating arguments and ensuring compliance with LDAP internationalization rules and formats (currently partly implemented only). This layer provides atomic operations for searches, modification, addition and deletion of multiple entries at once: ldap-search-entries, ldap-add-entries, ldap-delete-entries and ldap-modify-entries *** IMPORTANT NOTE *** Due to the function renaming, this patch introduces an incompatible change that breaks the packages using the current LDAP API, most notably EUDC and W3. A new version of EUDC is ready for commit if the patch is accepted, please notify me. Oscar 1999-11-27 Oscar Figueiredo <Oscar.Figueiredo(a)di.epfl.ch&gt; * eldap.h (Fldap_search) Renamed from Fldap_search_internal: (Fldap_add, Fldap_modify, Fldap_delete): New functions * eldap.c (Qadd, Qreplace): New constant symbols (Fldap_open): Use the LDAP_OPT_RESTART option to avoid interruptions by XEmacs signals Remove unnecessary calls to slow_down_interrupts and speed_up_interrupts (Fldap_search): Renamed from Fldap_search_internal Added new optional parameter VERBOSE that triggers progress messages display Remove unnecessary calls to slow_down_interrupts and speed_up_interrupts LDAP result code analysis rewritten (Fldap_add, Fldap_modify, Fldap_delete): New functions (syms_of_eldap): Define the new symbols and functions 1999-11-27 Oscar Figueiredo <Oscar.Figueiredo(a)di.epfl.ch&gt; * ldap.el (toplevel): Test if LDAP support has been compiled in (ldap-verbose): New option (ldap-search-entries): Renamed from ldap-search Conditionalize message display on ldap-verbose (ldap-add-entries, ldap-modify-entries, ldap-delete-entries): New defuns