Better usage of LLVertexBuffer::sEnableVBOs.
Added RenderUseStreamVBO debug setting for controlling usage of VBOs for particles/avatars/etc.

Backed out changeset useVBO fix, 12f94ed4e02b, "LLVertexBuffer only supposed to use sEnableVBOs at moment vert buff is created" for EXT-7835.  Will fix soon.

(transplanted from 19717602f45950c058c8ddce792d57ef21f67c99)
(transplanted from 11bf20602885c3d2d42d8a7f7361d2005a708b5c)

Checker: UNINIT_CTOR
Function: LLVertexBuffer::LLVertexBuffer(unsigned int, int)
File: /indra/llrender/llvertexbuffer.cpp

also added some sanity-checking around this.

CID 158
CID 157

Checker: OVERRUN_STATIC
Function: LLVertexBuffer::drawRange(unsigned int, unsigned int, unsigned int, unsigned int, unsigned int) const
File: /indra/llrender/llvertexbuffer.cpp

ignore-dead-branch

svn+ssh://svn.lindenlab.com/svn/linden/branches/moss/mv13a-merge-1

QAR-1343 maint-viewer-13a+libcurlexploitfix-3-3 combo merge

Merge of QAR-1267 to trunk.  This was a combo merge of QAR-1175 (maint-render-9) and QAR-1236 (dll-msvcrt-2)

svn merge -r 109838:112264 svn+ssh://svn.lindenlab.com/svn/linden/branches/maint-render/maint-render-9-merge-r109833

Result of svn merge -r107256:107258 svn+ssh://svn/svn/user/phoenix/license_2009_merge into trunk. QAR-1165

QAR-992 Merging revisions 101012-101170,101686-101687 of svn+ssh://svn.lindenlab.com/svn/linden/qa/viewer_combo_1-22-merge into linden/release

merge viewer_1-21 94770-96059 -> release

merge release@93398 viewer-merge-1@94007 -> release
dataserver-is-deprecated

merge Branch_1-20-14-Viewer-merge -> release
Includes Branch_1-20-Viewer-2 through 92456

merge release@88802 Branch_1-20-Viewer-2-merge-1@89178 -> release

merge -r 86279:86925 Branch_1-20-Viewer -> release

merge -r 87067:87077 svn+ssh://svn.lindenlab.com/svn/linden/branches/maint-render/maint-render-4-merge -> release. dataserver-is-deprecated.

merge Branch_1-20-Viewer -r 85828 : 86279 -> release

merge release-QAR-508 Viewer 1.20 RC 4
merge Branch_1-20-Viewer -r 85278 : 85828 -> release

windlight14 which have passed QA (up through r79932).

svn merge -r 80831:80833 svn+ssh://svn.lindenlab.com/svn/linden/branches/merge_windlight14_r80620

Result of svn merge -r71162:71205 svn+ssh://svn/svn/linden/branches/new-license into release. only changes files which are not deployed or the comments section of code.