Fix issue 1113, "detaching editted attachment does not unfreeze avatar"

Detaching an attachment didn't reset the select managers pause request
for the avatar.
Merge branch 'master' into aimultigrid
Bug fix.

 singularity-do-not-run-directly: /opt/secondlife/viewers/singularity/SingularityViewer/linden/indra/llcommon/llmemory.h:219: void ll_memcpy_nonaliased_aligned_16(char*, const char*, size_t): Assertion `src != __null' failed.

 Program received signal SIGABRT, Aborted.
 [Switching to Thread 0x7fff3342f700 (LWP 18001)]
 0x00007ffff0f951d5 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
 56      ../nptl/sysdeps/unix/sysv/linux/raise.c: No such file or directory.
 (gdb) bt
 #0  0x00007ffff0f951d5 in __GI_raise (sig=sig@entry=6) at ../nptl/sysdeps/unix/sysv/linux/raise.c:56
 #1  0x00007ffff0f98388 in __GI_abort () at abort.c:90
 #2  0x00007ffff0f8e252 in __assert_fail_base (fmt=0x7ffff10cc080 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x2c7ca97 "src != __null",
     file=file@entry=0x2c7ca40 "/opt/secondlife/viewers/singularity/SingularityViewer/linden/indra/llcommon/llmemory.h", line=line@entry=219,
     function=function@entry=0x2c7dc60 "void ll_memcpy_nonaliased_aligned_16(char*, const char*, size_t)") at assert.c:92
 #3  0x00007ffff0f8e302 in __GI___assert_fail (assertion=0x2c7ca97 "src != __null", file=0x2c7ca40 "/opt/secondlife/viewers/singularity/SingularityViewer/linden/indra/llcommon/llmemory.h",
     line=219, function=0x2c7dc60 "void ll_memcpy_nonaliased_aligned_16(char*, const char*, size_t)") at assert.c:101
 #4  0x0000000001b3ebd9 in ll_memcpy_nonaliased_aligned_16 (dst=0x7fff2c39f440 "\001", src=0x0, bytes=0)
     at /opt/secondlife/viewers/singularity/SingularityViewer/linden/indra/llcommon/llmemory.h:219
 #5  0x0000000001e09d93 in LLVector4a::memcpyNonAliased16 (dst=0x7fff2c39f440, src=0x0, bytes=0)
     at /opt/secondlife/viewers/singularity/SingularityViewer/linden/indra/llmath/llvector4a.cpp:44
 #6  0x0000000001e2a13c in LLVolumeFace::pushVertex (this=0x7fff3342daf0, pos=..., norm=..., tc=...)
     at /opt/secondlife/viewers/singularity/SingularityViewer/linden/indra/llmath/llvolume.cpp:6106
 #7  0x0000000001e2a03f in LLVolumeFace::pushVertex (this=0x7fff3342daf0, cv=...) at /opt/secondlife/viewers/singularity/SingularityViewer/linden/indra/llmath/llvolume.cpp:6080
 #8  0x0000000001e20498 in LLVolumeFace::optimize (this=0x7fff2c39ee20, angle_cutoff=2) at /opt/secondlife/viewers/singularity/SingularityViewer/linden/indra/llmath/llvolume.cpp:4841
 #9  0x0000000001aa61d4 in LLModel::optimizeVolumeFaces (this=0x7fff2c39e100) at /opt/secondlife/viewers/singularity/SingularityViewer/linden/indra/llprimitive/llmodel.cpp:866
 #10 0x0000000001aa5f28 in LLModel::createVolumeFacesFromDomMesh (this=0x7fff2c39e100, mesh=0x7fff2c36cc90)
     at /opt/secondlife/viewers/singularity/SingularityViewer/linden/indra/llprimitive/llmodel.cpp:829
 #11 0x0000000001aa8324 in LLModel::loadModelFromDomMesh (mesh=0x7fff2c36cc90) at /opt/secondlife/viewers/singularity/SingularityViewer/linden/indra/llprimitive/llmodel.cpp:1402
 #12 0x0000000000a9bc11 in LLModelLoader::doLoadModel (this=0x7fff4f74d480) at /opt/secondlife/viewers/singularity/SingularityViewer/linden/indra/newview/llfloatermodelpreview.cpp:1535
 #13 0x0000000000a9b100 in LLModelLoader::run (this=0x7fff4f74d480) at /opt/secondlife/viewers/singularity/SingularityViewer/linden/indra/newview/llfloatermodelpreview.cpp:1395
 #14 0x00007ffff5e52e9a in LLThread::staticRun (apr_threadp=0x7ffff7e572e0, datap=0x7fff4f74d480)
     at /opt/secondlife/viewers/singularity/SingularityViewer/linden/indra/llcommon/llthread.cpp:93
 #15 0x00007ffff7bc6e0e in start_thread (arg=0x7fff3342f700) at pthread_create.c:311
 #16 0x00007ffff10490fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113

This happened while loading some .dae.
Merge branch 'master' into aimultigrid
Erata for last commit (issue 1113).
Merge branch 'master' into aimultigrid
Do not destruct running Responders upon viewer exit.

This hopefully saves some crashes.
Merge branch 'master' into aimultigrid
Freeze also synchronized avatars when editing an attachment.

On the removal of permYouOwner():

Calling permYouOwner() to determine if an attachment is yours is
not correct: grid gods (and that includes BEFORE requesting admin
status) are marked as owner of everything in their sim.

The reason for that is that otherwise,
  <Melanie_T> if they only had it when actually godding u, the viewer
  would have to have an option to either show the proper menus (it
  doesn't) or allow the sim to refresh the object flags without full
  object updates (it hasn't).
  <Melanie_T> gods often have to act fast, for instance with griefers.
  Having transition to god mode take as long as a full rez just isn't an
  option, apart from the sim load caused by resending all objects.
  <Melanie_T> Then i tried resending only the object that was selected
  but there the arriving object update would close the pie menu.
  So you right-click a prim and the pie menu would close again.

The result has always been that if you are on your own sim, in opensim,
and select an attachment on another avatar, then YOU would freeze, not
the selected avatar. This patch fixes that "opensim related" bug as
well.