Fix __PCTOOL__ dependencies on SIMULATOR

* filesize() is not POSIX, so it doesn't need stubbing or redirecting
* make the various directory functions use the sim_ versions for PCTOOL
* PCTOOL needs generic byteswap functions
* fix the database makefile to not use -DSIMULATOR anymore

Change-Id: Ic6abc4f662830b85626c751a472fa4a03e844871
5 files changed