FreeBSD/src cc04566 (r348285)tests/sys/fs/fusefs mockfs.cc read.cc

fusefs: more build fixes

* Fix printf format strings on 32-bit OSes
* Fix -Wclass-memaccess violation on GCC-8 caused by using memset on an object
  of non-trivial type.
* Fix memory leak in MockFS::init
* Fix -Wcast-align error on i386 in expect_readdir
* Fix some heterogenous comparison errors on 32-bit OSes.

Sponsored by:   The FreeBSD Foundation
DeltaFile
+26-20tests/sys/fs/fusefs/mockfs.cc
+4-4tests/sys/fs/fusefs/read.cc
+3-3tests/sys/fs/fusefs/setattr.cc
+1-1tests/sys/fs/fusefs/mockfs.hh
+1-1tests/sys/fs/fusefs/utils.cc
+35-295 files

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