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, 72 deletions

diff --git a/lib/curl_progress.h b/lib/curl_progress.h
deleted file mode 100644
index e68f80416..000000000
--- a/lib/curl_progress.h
+++ /dev/null
@@ -1,72 +0,0 @@
-#ifndef HEADER_CURL_PROGRESS_H
-#define HEADER_CURL_PROGRESS_H
-/***************************************************************************
- *                                  _   _ ____  _
- *  Project                     ___| | | |  _ \| |
- *                             / __| | | | |_) | |
- *                            | (__| |_| |  _ <| |___
- *                             \___|\___/|_| \_\_____|
- *
- * Copyright (C) 1998 - 2012, 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_timeval.h"
-
-
-typedef enum {
-  TIMER_NONE,
-  TIMER_NAMELOOKUP,
-  TIMER_CONNECT,
-  TIMER_APPCONNECT,
-  TIMER_PRETRANSFER,
-  TIMER_STARTTRANSFER,
-  TIMER_POSTRANSFER,
-  TIMER_STARTSINGLE,
-  TIMER_STARTACCEPT,
-  TIMER_REDIRECT,
-  TIMER_LAST /* must be last */
-} timerid;
-
-int Curl_pgrsDone(struct connectdata *);
-void Curl_pgrsStartNow(struct SessionHandle *data);
-void Curl_pgrsSetDownloadSize(struct SessionHandle *data, curl_off_t size);
-void Curl_pgrsSetUploadSize(struct SessionHandle *data, curl_off_t size);
-void Curl_pgrsSetDownloadCounter(struct SessionHandle *data, curl_off_t size);
-void Curl_pgrsSetUploadCounter(struct SessionHandle *data, curl_off_t size);
-int Curl_pgrsUpdate(struct connectdata *);
-void Curl_pgrsResetTimesSizes(struct SessionHandle *data);
-void Curl_pgrsTime(struct SessionHandle *data, timerid timer);
-
-
-/* Don't show progress for sizes smaller than: */
-#define LEAST_SIZE_PROGRESS BUFSIZE
-
-#define PROGRESS_DOWNLOAD (1<<0)
-#define PROGRESS_UPLOAD   (1<<1)
-#define PROGRESS_DOWN_AND_UP (PROGRESS_UPLOAD | PROGRESS_DOWNLOAD)
-
-#define PGRS_SHOW_DL (1<<0)
-#define PGRS_SHOW_UL (1<<1)
-#define PGRS_DONE_DL (1<<2)
-#define PGRS_DONE_UL (1<<3)
-#define PGRS_HIDE    (1<<4)
-#define PGRS_UL_SIZE_KNOWN (1<<5)
-#define PGRS_DL_SIZE_KNOWN (1<<6)
-
-#define PGRS_HEADERS_OUT (1<<7) /* set when the headers have been written */
-
-
-#endif /* HEADER_CURL_PROGRESS_H */
-