Two modifications:
1. The addition of 2013 to the copyright year range for every file;
2. The use of a single year range, instead of potentially multiple
year ranges, as approved by the FSF.
gdb/ChangeLog
* target.c (simple_search_memory): Include access length in
warning message.
gdb/gdbserver/ChangeLog
* server.c (handle_search_memory_1): Include access length in
warning message.
gdb/testsuite/ChangeLog
Test find command on unmapped memory.
* gdb.base/find-unmapped.c: New file.
* gdb.base/find-unmapped.exp: New file.
