Commit Briefs
raw object size should not include the length of the object's header
This way, the size of a raw object is the same regardless of whether the object was found in a loose object file or in a pack file.
Stop including <sys/syslimits.h> directly.
POSIX says the limits defined there are available from <limits.h>, which almost all affected source files already included anyway. ok millert stsp
got_error_from_errno -> got_error_prefix_errno
also add got_error_prefix_errno2 and got_error_prefix_errno3 which should hopefully all be merged into a single function with variadic args (but can't alloc mem)