Fix 4754 vtols and cvs missing troop space bays

[Sleet01]

Fixes:

1. An off-by-one error I introduced, which prevents units with single bays (usually troop/infantry) from populating.
2. 55 or so BLK files with multiple <transporters> blocks that wouldn't have loaded correctly anyhow - only the first can be read.
3. Corrected several vehicles where multiple bays had been added, or the top bay was a correction for the lower bay, or (especially in the case of the Ajax D) bays, weapons, and equipment were incorrect.
4. Reverted the change that is causing MML to crash in the cache view, so that I could use it to correct 2 and 3 above.

Testing:

• loaded all of the vehicles with corrected bays in MML, with a sampling also loaded in MM, to verify all loadouts are now valid.
• loaded vehicles in MM and populated troop bays / BA handholds with various infantry and BA units:

close #4754

[Sleet01]

Original dev is aware that this needs fixing, but I need MML for other work, so I'd like to revert this change until the permanent fix is ready.

[Sleet01]

I'd initially read these functions as finding the start and end tags for a given block; instead they find the line index of the first text line, and the line index after the last text line, so e.g.:

<transporters>
troopspace:4.0
</transporters>

would give an index difference of 1, and

<transporters>
</transporters>

would give a difference of 0, rather than 1 as I had initially assumed. Mea culpa.

[Sleet01]

I read this as a botched correction, not as an attempt to create two separate bays. Updating to a single bay with the new size produced entries that match the TRO.

[Sleet01]

I only updated items to "OMNI" when I could confirm them via the TRO or sheet.

[Sleet01]

Sorry, I just spotted the merge conflict; if the new version is working, my reversion is no longer necessary.