In recent libz update, tb@ overzealously attempted codesize reduction with

In recent libz update, tb@ overzealously attempted codesize reduction with
option BUILDFIXED -- which is incompatible with kernel hibernate unpack since
it places side-effects into BSS, rather than inside z_streamp or using
the private allocator.  While here DYNAMIC_CRC_TABLE could cause similar
problems, so disable this also.
Space savings for the media is best done with bootblock-specific libz
compile options, coming in the following commit.
ok tb mlarkin