Examples display incorrect fractional lat/long

[nseidle]

If the lat_frac has leading zeros, they are dropped, leading to the incorrect value being printed:

I know examples 10 and 11 are effected but there may be others:

One solution is to use printf

Serial.printf("%d.%07d\n", lat_int, lat_frac); // Print the integer part of the latitude

But I know its support is iffy. We might have to break down and just write a silly helper function inside these examples.

[PaulZC]

Fixed in this commit.
I've searched, and I think this is one of a kind...
A couple of examples weren't using nanoseconds correctly (nanoseconds can be negative) so I've corrected those too, but that's a different issue.

[PaulZC]

I don't think this issue affects Example11 as the printing there is done all in one go (using double)?