Fix friends list online count being wrong

This patch changes from always updating online count with cells, to checking the indicator cell's previous value before changing it, maintaining the count instead of always modifying it during updates..
Removes commented out OnlineSIP bits, as it's just easier not to upkeep them.
Fix up overcomplicated logic to get friends search working right.
Issue 1151: Add share to LLAvatarActions

Syncs LLGiveInventory and LLFloaterAvatarPicker with upstream.
Syncsyncsync~

Translators:
menu_inventory.xml menu_radar.xml and menu_avs_list.xml: Share
notifications.xml: ShareNotification, ShareItemsConfirmation, ShareFolderConfirmation, ItemsShared
strings.xml: share_alert
Only disable friend items that have rights changed (scope reduction surgery)

Thanks to Deltek for finding this one!
Merge branch 'master' of https://github.com/DamianZhaoying/SingularityViewer
Muscle Memory fix, move Share to the bottom of the inventory menu.
Avatar Picker's list of friends should use the friends name system.
[RLVa] Don't filter parts of words out just because they match a name under restraint

This fix is free to be reused under LGPL..
Linux64 library update! (other platforms to come)

Curl 7.38
LibPNG 1.6.13
LLQTWebkit 4.8.6
OpenSSL 1.0.1j (Yep, this fixes POODLE)

Libraries provided by Alchemy Viewer.
Fix libpng warning: iCCP: known incorrect sRGB profile
Add quit button to toolbar.
Complete keyboard-camera panning featureset with pgup pan in and pgdn pan out
Clean up and draw optimization in LLStatusBar.

I saw a 1.7 FPS gain, which is pretty good for my old card ^*^
Added Spanish translations to new Quit button toolbar and Shared options