Make internal header file names consistent

Libcrypto currently has a mess of *_lcl.h, *_locl.h, and *_local.h names
used for internal headers. Move all these headers we inherited from
OpenSSL to *_local.h, reserving the name *_internal.h for our own code.
Similarly, move dtls_locl.h and ssl_locl.h to dtls_local and ssl_local.h.
constant_time_locl.h is moved to constant_time.h since it's special.

Adjust all .c files in libcrypto, libssl and regress.

The diff is mechanical with the exception of tls13_quic.c, where
#include <ssl_locl.h> was fixed manually.

discussed with jsing,
no objection bcook

1 files changed, 5 insertions, 0 deletions

diff --git a/src/lib/libcrypto/rc4/rc4_local.h b/src/lib/libcrypto/rc4/rc4_local.h
new file mode 100644
index 0000000000..61d08a4d9d
--- /dev/null
+++ b/src/lib/libcrypto/rc4/rc4_local.h
@@ -0,0 +1,5 @@
+/* $OpenBSD: rc4_local.h,v 1.1 2022/11/26 16:08:54 tb Exp $ */
+
+#ifndef HEADER_RC4_LOCL_H
+#define HEADER_RC4_LOCL_H
+#endif