FITIn-reg: checks bytes individually on mem syscalls
FITIn-reg: reduces lookups on memory syscall callback
FITIn-reg: fixes call signature
FITIn-reg: changes the way to set invalid reg origins
FITIn-reg: reverts bad fix on adding a load state
FITIn-reg: disables flipping on read for PUT
FITIN-reg: fixes bug because of shared IRExpr
FITIn-reg: fixes wrong dirty call address
FITIn-reg: removes load_states drop on leaving client code
FITIn-reg: fixes bad monitorable relevance lookup
FITIn-reg: removes reg syscallback dependency on load_states