Figure out how large of integer is needed to store the value

The check bytes are used to reject strings that aren't in the table without paging in the table's cstring data. This checkbyte calculation catches 478

This routine builds a minimal atlas with just dyld, then calls notifiers, and finally. It is only used to when transitioning from on disk dyld to n c

bplist00 uses the encoded integer internally in arrays and dictionaries

<rdar://problem/10111032> wrap calls to stat() with check for EAGAIN

catlist are for objc classes and @objc Swift classes. catlist2 are for Swift stub classes, which is what we check for here.

Note: because of cycles, isValid() cannot just call isValid() on each of its dependents Instead we do this in three steps: 1) recursively mark all rea