Remove /* foo.c */ comments

This was done by the following
        find . -name '*.[ch]' | /tmp/pl
where /tmp/pl is the following three-line script:
        print unless $. == 1 && m@/\* .*\.[ch] \*/@;
        close ARGV if eof; # Close file to reset $.

And then some hand-editing of other files.

Reviewed-by: Viktor Dukhovni <viktor@openssl.org>

ssl/record/dtls1_bitmap.c

@@ -1,4 +1,3 @@
-/* ssl/record/dtls1_bitmap.c */
 /*
  * DTLS implementation written by Nagendra Modadugu
  * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.

ssl/record/rec_layer_d1.c

@@ -1,4 +1,3 @@
-/* ssl/record/rec_layer_d1.c */
 /*
  * DTLS implementation written by Nagendra Modadugu
  * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.

ssl/record/rec_layer_s3.c

@@ -1,4 +1,3 @@
-/* ssl/record/rec_layer_s3.c */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *

ssl/record/record.h

@@ -1,4 +1,3 @@
-/* ssl/record/record.h */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *

ssl/record/record_locl.h

@@ -1,4 +1,3 @@
-/* ssl/record/record_locl.h */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *

ssl/record/ssl3_buffer.c

@@ -1,4 +1,3 @@
-/* ssl/record/ssl3_buffer.c */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *

ssl/record/ssl3_record.c

@@ -1,4 +1,3 @@
-/* ssl/record/ssl3_record.c */
 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  * All rights reserved.
  *