Add a texture inspector and show it when hovering over an inventory textory (or folder containing - among others - exactly one texture) and when hovering over notecard embedded textures

This picks up the change to 32-bit Windows viewer-manager.

# Conflicts:
#	autobuild.xml
#	indra/newview/llappviewer.cpp
#	indra/newview/viewer_manifest.py

Fix template verifier erroneously failing checksum check

Approved-by: Nat Linden
Approved-by: Signal Linden
Approved-by: Andrey Lihatskiy

(cherry picked from commit 5fcb811a)

'from __future__ import print_function' not only makes the print() function
available, it also makes the Python 2 print statement invalid syntax. Until we
merge with the Python 3 branch (soon!), don't import print_function: instead
revert to 'print >> sys.stderr' statements.

Instead we have a new bundled executable SLVersionChecker, so that must be
signed instead of _greenlet.so.

On Mac, execute the packaged SLVersionChecker directly rather than invoking
system Python on our manually-bundled scripts.

1. When SL window closes it doesn't mean that process died so gave it a bit more time to terminate
2. Added a retry logic in case first run happened too early for some reason
3. Replaced ok/cancel on locked file with abort/retry/ignorei

This reverts commit 8215fff0.

# Conflicts:
#	indra/newview/lltoolpie.cpp

following promotion of DRTVWR-554

+ post merge conflict fix

# Conflicts:
#	indra/newview/app_settings/key_bindings.xml
#	indra/newview/llappviewer.cpp
#	indra/newview/llkeyconflict.cpp

There shouldn't be any differences for 'None' between normal objects and attachments