Residuals from Bug 1296

Added forcing time64 to be positive.  Fixes problem where large negative value overflows into int.
More careful computation of TimeToPosition() so floor is only called with in range values.
Re-instated 'true' flags for hiddenMid calls, which I'd mistakenly dropped, so that (later) FishEye can distinguish.

Merge remote-tracking branch 'upstream/master' into wx3

Falling back to the sudo builds

Corsican and Nepali not supported.

(P3) Commented out co and ne languages as they are not supported by Audacity.

Return to using private (l)lrint(f) inline functions.

Oops, removing misplaced tag for 2.0.6.

we don\'t need to ship this script, and indeed we don't want end user…

…s running it because they will load the server hard. So delete the script from the source release

As used for 1.3.14rc1, includes 'help' and adjusted for 32-bit win.