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, 69 deletions

diff --git a/lib/curl_rtsp.h b/lib/curl_rtsp.h
deleted file mode 100644
index 3ffa70cc6..000000000
--- a/lib/curl_rtsp.h
+++ /dev/null
@@ -1,69 +0,0 @@
-#ifndef HEADER_CURL_RTSP_H
-#define HEADER_CURL_RTSP_H
-/***************************************************************************
- *                                  _   _ ____  _
- *  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.
- *
- ***************************************************************************/
-#ifndef CURL_DISABLE_RTSP
-
-extern const struct Curl_handler Curl_handler_rtsp;
-
-bool Curl_rtsp_connisdead(struct connectdata *check);
-CURLcode Curl_rtsp_parseheader(struct connectdata *conn, char *header);
-
-#else
-/* disabled */
-#define Curl_rtsp_parseheader(x,y) CURLE_NOT_BUILT_IN
-#define Curl_rtsp_connisdead(x) TRUE
-
-#endif /* CURL_DISABLE_RTSP */
-
-/*
- * RTSP Connection data
- *
- * Currently, only used for tracking incomplete RTP data reads
- */
-struct rtsp_conn {
-  char *rtp_buf;
-  ssize_t rtp_bufsize;
-  int rtp_channel;
-};
-
-/****************************************************************************
- * RTSP unique setup
- ***************************************************************************/
-struct RTSP {
-  /*
-   * http_wrapper MUST be the first element of this structure for the wrap
-   * logic to work. In this way, we get a cheap polymorphism because
-   * &(data->state.proto.rtsp) == &(data->state.proto.http) per the C spec
-   *
-   * HTTP functions can safely treat this as an HTTP struct, but RTSP aware
-   * functions can also index into the later elements.
-   */
-  struct HTTP http_wrapper; /*wrap HTTP to do the heavy lifting */
-
-  long CSeq_sent; /* CSeq of this request */
-  long CSeq_recv; /* CSeq received */
-};
-
-
-#endif /* HEADER_CURL_RTSP_H */
-