Update all source files to use uintN_t

The data types used in goodfet files are of 3 kinds:

-stdint ones (uint8_t, etc)
-normal C ones (unsigned char, etc)
-some more (u8, etc)

My proposition is to use stdint types in every file.

Is there anything unknown to me that would prevent doing that?

[travisgoodspeed]

Nothing prevents it, but be very careful not to damage any code that you don't have the hardware to test. One mistaken regex could break support for a rare module, and it wouldn't be noticed for months.