Fix for windows build breakage.  Set WINVER and _WIN32_WINNT preprocessor definitions appropriately for using windows XP API calls.

For developer Nix builds, default handle signal after crash report.  Linux should generate a core dump; Darwin a mac crash report.

Generate windows minidump files on crash for developer (not release for download) builds.  SL crash reporter still enabled.

Removed hard coded scaling of movements when in build mode, made it a debug setting defaulted to 1 to disable it.

EXT-8029	Edit Wearable > Skirt, Jacket, Socks - Can't open texture or color picker, texture appears as gray X
EXT-7770	Revert on shirt edit doesn't revert the fabric or color/tint icons back to their originals

fixes color swatch/texture ctrl disabled issue and "undo changes" not reverting textures on avatar
does not fix grey tattoo preview issue
reviewed by Nyx

EXT-8093 FIXED No "open" or "properties" items for gestures

Re-added open/properties to gestures
Fixed right-click inventory selection so that it does something logical & consistent for multiple items.  Had to add a "getLastVisible" to LLView to support this.

Button now gets disabled in the early-exit case in LLPanelOutfitEdit::onInventorySelectionChange().

onInventorySelectionChange() also uses the new predicate get_can_item_be_worn(), which both checks whether the item is already being worn and whether it's of a type that could be worn.

Reviewed by Nyx at http://codereview.lindenlab.com/2451030 .

Fix EXT-8074: unregister floater as message handler on destruction to prevent race from user closing dialog and receiving price message.

Added slplugin-objc.mm.

Made SLPlugin do the cocoa setup during initialization, and create/delete an
autorelease pool each time through its main loop.  This should make plugin code
that's using autorelease correctly not leak.

Fixed a bug in the version of setupCocoa() used in the viewer (it was never
setting its "inited" variable).

Now disabling remove if an outfit is linked in the COF.

Fix EXT-8075: close signal connection on destruction to prevent callbacks after LLInspectToast is, well, toast.

reviewed by nyx

Reviewed by Mike Antipov at https://codereview.productengine.com/secondlife/r/658/

--HG--
branch : product-engine

- Removed code responsible for disabling actions panel when sitting.

- Removed LLFloaterMove::setEnabled() and replaced calls to it with calls showModeButtons() because it was the only code which remained there after first step of this fix.

Reviewed by Leyla Farazha at https://codereview.productengine.com/secondlife/r/655/

--HG--
branch : product-engine

- Added menu item 'Wear - Add to Current Outfit' (menu_outfit_gear.xml).
- Added menu item handler onAdd().

Reviewed by Mike Antipov at https://codereview.productengine.com/secondlife/r/657/

--HG--
branch : product-engine