.enable all compile time warnings and make them errors
.refactor functions with unused parameters
.fix null pointer dereference before checking for null
.proper variable initialization
.use safe string copy functions
.fix massive memory corruption bug in fs_getdents
This patch makes PFS, EXT2 and MFS print only once that they're out of
space. After freeing up space and running out of space again, the message
will be printed again also.
