update license of compat and crypto

- change license to be just MIT for all files in compat and crypto
- also add missing header end comments
- ensure default header include style

src/compat/glibc_compat.cpp

@@ -1,5 +1,5 @@
 // Copyright (c) 2009-2014 The Bitcoin developers
-// Distributed under the MIT/X11 software license, see the accompanying
+// Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
 #if defined(HAVE_CONFIG_H)
@@ -7,6 +7,7 @@
 #endif
 
 #include <cstddef>
+
 #if defined(HAVE_SYS_SELECT_H)
 #include <sys/select.h>
 #endif