Revert changes relative to lib/*.[ch] recent renaming

This reverts renaming and usage of lib/*.h header files done
28-12-2012, reverting 2 commits:

  f871de0... build: make use of 76 lib/*.h renamed files
  ffd8e12... build: rename 76 lib/*.h files

This also reverts removal of redundant include guard (redundant thanks
to changes in above commits) done 2-12-2013, reverting 1 commit:

  c087374... curl_setup.h: remove redundant include guard

This also reverts renaming and usage of lib/*.c source files done
3-12-2013, reverting 3 commits:

  13606bb... build: make use of 93 lib/*.c renamed files
  5b6e792... build: rename 93 lib/*.c files
  7d83dff... build: commit 13606bbfde follow-up 1

Start of related discussion thread:

  http://curl.haxx.se/mail/lib-2013-01/0012.html

Asking for confirmation on pushing this revertion commit:

  http://curl.haxx.se/mail/lib-2013-01/0048.html

Confirmation summary:

  http://curl.haxx.se/mail/lib-2013-01/0079.html

NOTICE: The list of 2 files that have been modified by other
intermixed commits, while renamed, and also by at least one
of the 6 commits this one reverts follows below. These 2 files
will exhibit a hole in history unless git's '--follow' option
is used when viewing logs.

  lib/curl_imap.h
  lib/curl_smtp.h

1 files changed, 0 insertions, 212 deletions

diff --git a/lib/curl_llist.c b/lib/curl_llist.c
deleted file mode 100644
index 46a8d9960..000000000
--- a/lib/curl_llist.c
+++ /dev/null
@@ -1,212 +0,0 @@
-/***************************************************************************
- *                                  _   _ ____  _
- *  Project                     ___| | | |  _ \| |
- *                             / __| | | | |_) | |
- *                            | (__| |_| |  _ <| |___
- *                             \___|\___/|_| \_\_____|
- *
- * Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
- *
- * This software is licensed as described in the file COPYING, which
- * you should have received as part of this distribution. The terms
- * are also available at http://curl.haxx.se/docs/copyright.html.
- *
- * You may opt to use, copy, modify, merge, publish, distribute and/or sell
- * copies of the Software, and permit persons to whom the Software is
- * furnished to do so, under the terms of the COPYING file.
- *
- * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
- * KIND, either express or implied.
- *
- ***************************************************************************/
-
-#include "curl_setup.h"
-
-#include "curl_llist.h"
-#include "curl_memory.h"
-
-/* this must be the last include file */
-#include "curl_memdebug.h"
-
-/*
- * @unittest: 1300
- */
-static void
-llist_init(struct curl_llist *l, curl_llist_dtor dtor)
-{
-  l->size = 0;
-  l->dtor = dtor;
-  l->head = NULL;
-  l->tail = NULL;
-}
-
-struct curl_llist *
-Curl_llist_alloc(curl_llist_dtor dtor)
-{
-  struct curl_llist *list;
-
-  list = malloc(sizeof(struct curl_llist));
-  if(!list)
-    return NULL;
-
-  llist_init(list, dtor);
-
-  return list;
-}
-
-/*
- * Curl_llist_insert_next()
- *
- * Inserts a new list element after the given one 'e'. If the given existing
- * entry is NULL and the list already has elements, the new one will be
- * inserted first in the list.
- *
- * Returns: 1 on success and 0 on failure.
- *
- * @unittest: 1300
- */
-int
-Curl_llist_insert_next(struct curl_llist *list, struct curl_llist_element *e,
-                       const void *p)
-{
-  struct curl_llist_element *ne = malloc(sizeof(struct curl_llist_element));
-  if(!ne)
-    return 0;
-
-  ne->ptr = (void *) p;
-  if(list->size == 0) {
-    list->head = ne;
-    list->head->prev = NULL;
-    list->head->next = NULL;
-    list->tail = ne;
-  }
-  else {
-    /* if 'e' is NULL here, we insert the new element first in the list */
-    ne->next = e?e->next:list->head;
-    ne->prev = e;
-    if(!e) {
-      list->head->prev = ne;
-      list->head = ne;
-    }
-    else if(e->next) {
-      e->next->prev = ne;
-    }
-    else {
-      list->tail = ne;
-    }
-    if(e)
-      e->next = ne;
-  }
-
-  ++list->size;
-
-  return 1;
-}
-
-/*
- * @unittest: 1300
- */
-int
-Curl_llist_remove(struct curl_llist *list, struct curl_llist_element *e,
-                  void *user)
-{
-  if(e == NULL || list->size == 0)
-    return 1;
-
-  if(e == list->head) {
-    list->head = e->next;
-
-    if(list->head == NULL)
-      list->tail = NULL;
-    else
-      e->next->prev = NULL;
-  }
-  else {
-    e->prev->next = e->next;
-    if(!e->next)
-      list->tail = e->prev;
-    else
-      e->next->prev = e->prev;
-  }
-
-  list->dtor(user, e->ptr);
-
-  e->ptr  = NULL;
-  e->prev = NULL;
-  e->next = NULL;
-
-  free(e);
-  --list->size;
-
-  return 1;
-}
-
-void
-Curl_llist_destroy(struct curl_llist *list, void *user)
-{
-  if(list) {
-    while(list->size > 0)
-      Curl_llist_remove(list, list->tail, user);
-
-    free(list);
-  }
-}
-
-size_t
-Curl_llist_count(struct curl_llist *list)
-{
-  return list->size;
-}
-
-/*
- * @unittest: 1300
- */
-int Curl_llist_move(struct curl_llist *list, struct curl_llist_element *e,
-                    struct curl_llist *to_list,
-                    struct curl_llist_element *to_e)
-{
-  /* Remove element from list */
-  if(e == NULL || list->size == 0)
-    return 0;
-
-  if(e == list->head) {
-    list->head = e->next;
-
-    if(list->head == NULL)
-      list->tail = NULL;
-    else
-      e->next->prev = NULL;
-  }
-  else {
-    e->prev->next = e->next;
-    if(!e->next)
-      list->tail = e->prev;
-    else
-      e->next->prev = e->prev;
-  }
-
-  --list->size;
-
-  /* Add element to to_list after to_e */
-  if(to_list->size == 0) {
-    to_list->head = e;
-    to_list->head->prev = NULL;
-    to_list->head->next = NULL;
-    to_list->tail = e;
-  }
-  else {
-    e->next = to_e->next;
-    e->prev = to_e;
-    if(to_e->next) {
-      to_e->next->prev = e;
-    }
-    else {
-      to_list->tail = e;
-    }
-    to_e->next = e;
-  }
-
-  ++to_list->size;
-
-  return 1;
-}