Improved situation of issue #47: tooltip sometimes appears even with 'caption' on
Tooltips were often appearing on deviantart.com even when Caption was on.
It was actually not suppressing the title attribute until the image actually
popped up, so the tooltip would appear any time the configured
"Delay before displaying image" plus the actual time to load the image
was greater than 0.5 seconds (At least on OSX).  Now it suppresses
the tooltip as soon as the "Delay before displaying image" has passed,
so there shouldn't be a problem as long as that is 0.5 or smaller.
Fixed #34: Indicate whether link is the same as the image being shown
Shows crosshair cursor on thumb in that case.  Note sure if it'll make
sense to people, though.  Tried using TZP cursor from chrome://,
but got security error.
More progress on #34: Indicate whether link is the same as the image being shown

Figured out how to get it to show our custom cursor.  Seems to work OK, but
has these issues:
1. Probably need to implement restoring original cursor when popup dismissed.
2. Maybe improved detection of the condition to include looking for
onclick and similar handlers.
Added cursor files
More fix #34: now restores original cursor when dismissing
popup.  Also doesn't use special cursor if node has an onclick or
onmousedown handler.
Cursor: popup now shows cursor when mouse is overpopup and
mouse is moving.  Now uses special cursor even if there is an
onmousedown or onclick if it appears to be a Lightbox previewer.

Caution: may be causing high CPU usage, at least when debug is on;
need to test that.
Cursor now explicitly ignores reddit's 'toolbar' link wrapper
Fix #44: Large images load in too large chunks
Improved #66: gif animation starts before popup displayed
For the latter, reduced delay before showing for .gif, but
only helps when URL contains ".gif".

NOTE: Fix for #44 changes how images are displayed and reduces _panelWidthAddon
to 0 (based on testing on mac).  Will need testing on all operating
systems and multiple firefox versions.  There is still a slight
problem of an extra line 4 or so pixels high below the image, above
the caption.  That seems to be space in the div outside the image, but
I haven't been able to eliminate it even setting border, margin, and
pad all to 0px.
Merge branch 'cursor' into dev

Conflicts:
	src/chrome/content/overlay.js
Changed cursor image to include a '=' sign
Reduced size of same-site cursor
Bug fix: was generating exception and not hiding caption due to bug introduced when adding 'Pop-up takes keyboard focus' pref.  Don't know if it caused any user-visible consequences, but see EXCEPTION log msgs in log file when debug on
Added skylin.es (as part of twitpic rule)
Improved picfog.com, twicsy.com
Merge branch 'master' into dev

Conflicts:
	src/chrome/content/overlay.js
Merge branch 'sites' into dev

Conflicts:
	src/chrome/content/overlay.js
Merge branch 'cursor' into dev
Merge branch 'master' into htmlpopup
Bug fixes: fixed a couple cases of using 'this' instead of 'that',
though I never saw adverse impact from it.  One case happened only
when an image load error is being reported, and the other would
probably only cause some inefficiency when 'Popup takes focus' is off.
Optimization (especially when Popup takes focus): while waiting
for image to load, no longer keeps re-showing the 'working'
indicator.