Memory leak patches

[Lawrence L Love]

Sending two independent memory leak patches:

[PATCH 1/2] apitrace trim: Remove memory leak in FastCallRange
    This one adds a reference counting class to delete pointers to
    allocated memory (FastCallRange*) blocks only when they are no
    longer being used. See patch message for details.

[PATCH 2/2] apitrace trim: plug memory leak in trim_trace()
    This one is a single line, adding a 'delete' that was missing.

I sent a previous series of patches that included memory leak patches that,
on futher testing, were not complete. However, included in that series
are three other patches that can be reviewed. Of those three, two are
order dependent on each other:

1st to be applied
[PATCH] apitrace: Allow multiple --calls and/or --frames input options
2st to be applied
[PATCH] apitrace: Allow comma separated lists in --calls and --frames options

The third is an independent patch:
[PATCH] trim: clean up help output

Thanks,
Larry