Make viewer compile on standalone linux x86_64

This involves making libllcommon shared, a change
that was not finished for windows/Mac.
More changes are needed to indra/newview/viewer_manifest.py
for those two operating systems, as well as to
indra/copy_win_scripts.

I did not test this on linux 32bit, nor non-standalone
on that OS, either.

I did not check voice (which will very likely not work
anyway on 64bit). And currently the webkit plugin doesn't
work for me, but I'll fix that in a different commit.

indra/newview/CMakeLists.txt

@@ -1467,6 +1467,7 @@ if (LINUX)
       COMMAND ${PYTHON_EXECUTABLE}
       ARGS
         ${CMAKE_CURRENT_SOURCE_DIR}/viewer_manifest.py
+        --standalone=${STANDALONE}
         --grid=${GRID}
         --channel=${VIEWER_CHANNEL}
         --login_channel=${VIEWER_LOGIN_CHANNEL}
@@ -1591,17 +1592,17 @@ endif (LL_TESTS)
 # Don't do these for DARWIN or LINUX here -- they're taken care of by viewer_manifest.py
 if (WINDOWS)
 
-  #~ get_target_property(BUILT_LLCOMMON llcommon LOCATION)
-  #~ add_custom_command(
-      #~ TARGET ${VIEWER_BINARY_NAME} POST_BUILD
-      #~ COMMAND ${CMAKE_COMMAND}
-      #~ ARGS
-      #~ -E
-      #~ copy_if_different
-      #~ ${BUILT_LLCOMMON}
-      #~ ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}
-      #~ COMMENT "Copying llcommon.dll to the runtime folder."
-      #~ )
+  get_target_property(BUILT_LLCOMMON llcommon LOCATION)
+  add_custom_command(
+      TARGET ${VIEWER_BINARY_NAME} POST_BUILD
+      COMMAND ${CMAKE_COMMAND}
+      ARGS
+      -E
+      copy_if_different
+      ${BUILT_LLCOMMON}
+      ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR}
+      COMMENT "Copying llcommon.dll to the runtime folder."
+      )
 
   get_target_property(BUILT_SLPLUGIN SLPlugin LOCATION)
   add_custom_command(