whitespace; align backslashes in macro definition

ok patrick@
Use appropriate integer types for ask_num().

ask_num() is used for C/H/S values, all of which are 32 bit, unsigned
integers.

ok patrick@
Be sure to always write changes to disk on quit.

Adapt dirty tracking from CHS to LBA edit.

input and ok patrick@
Extract LBA to C/H/S calculations (and vice versa) into separate functions.

input and ok patrick@
Tweak partition edit defaults.

Calculate available space after the offset has been changed.

ok patrick@
Replace u_int*_t with C99s uint*_t.

idea by patrick@