* So, as it happens, when assigning the product of two 32-bit variables into a 64-bit one,
compilers default to being *DUMB* and, against all reasonable expectations, do not perform
that multiplication as a 64-bit operation (even when the code is compiled as x64). Wow,
that's really great decision making by compiler designers if I ever saw some... Whoever
decided that C developers would much rather want truncation and 32-bit overflows, instead
of the expected *LOGICAL* behaviour of conducting arithmetic operations as 64-bit when the
result will be assigned to a 64-bit variable, need to be condemned to a lifetime of trying
to help elderly folks trying to conduct simple computing tasks as a punishment...
Anyhoo, nt_write_blk()'s offset.QuadPart = block * channel->block_size + nt_data->offset
was overflowing 32-bit as soon as block * channel->block_size went over the 4 GB mark,
with the disastrous results one can expect. Considering that this is code we practically
lifted verbatim from e2fsprogs, I guess e2fsprogs' NT I/O manager was never properly
tested with anything larger than a 4 GB. Awesome!
* We fix the above by doing what unix_io.c does and setting the 32-bit read/write_blk()
calls to be wrappers around their 64-bit counterpart (since, once you deal with a 64-bit
block variable, the computation is conducted as 64-bit).
* Also remove a bunch of stuff we don't need from config.h
* Closes#1396
* Windows platforms prior to Windows 10 1703 cannot access any logical partition besides the
first one (we don't even get a volume for those).
* This fix enables the use of physical + offset for ext# formatting to work around this,
which is file since we don't actually need to mount the partition.
* Also fix ext2fs_open2() not handling normalized versions of Windows drive paths ("\\?\...")
* Also fix an issue where we would make the drive letter unavailable after formatting a
standalone partition to ext#.
* Also ensure that we return an error if the drive we attempt to locate a partition on
through an offset does not match the currently selected one.
* Also remove some unused calls in drive.c.
* Closes#1374
