changed h_inode and balloc for bitmap support

[pannadan]

seg faulting on a lot of the tests like delete_each and delete_all. Difficult to tell where the issue is coming from because dmesg points to a magic number discrepancy.

[hayley-leblanc]

I suspect that the panic you emailed me about is happening in the inode allocator, specifically in dealloc_ino because IIRC that is called before we deallocate any pages. According to this documentation about the index operation:

squirrelfs/linux/rust/alloc/vec/mod.rs

Lines 229 to 234 in e49c012

	/// However be careful: if you try to access an index which isn't in the `Vec`,
	/// your software will panic! You cannot do this:
	///
	/// ```should_panic
	/// let v = vec![0, 2, 4, 6];
	/// println!("{}", v[6]); // it will panic!

attempting to access an index in a vector that doesn't exist using [] will panic. This is how dealloc_ino tries to update the index of the newly-deallocated inode, so I suspect that the panic occurs because we are trying to access an inode that's beyond the end of the vector. I'm not 100% sure this is the problem, but it's probably a good place to start looking.