- Implement callback functions needed by newlib
- POSIX environment
- Thread safe alloc/dealloc open/close files
- Changed the way that HEAP is allocated, now by default it uses all available RAM except 512KB/
- Implement a lot of missing functions for having a real POSIX environment (some implementations are dummy because are impossible to do in the PSP OS)
- Adding specific inet changes that previously where in the PSP newlib patch
- Deleting the uncompleted & custom libc library
- Create some weak functions during init of libc process to save some KB if we want to have tiny apps
- Other I/O improvements
