windows opengl: We should actually use Init() from OpenGLSalGraphicsImpl.

Change-Id: I524883b0f0bbce9a8b6f893771f144feeee49934
windows opengl: Transparency of the native widgets.

Change-Id: Ifa6ba5735582effc27ac68556c2367077705d1d6
request also a stencil size

Change-Id: Ib3b8b70aa50dd1a42108e3e9091350bf1d315b03
if we use hungarian notation let use it consistently

Change-Id: Ia17a5d983afb98e0b348909a66be85ea55f8a47a
no need to declare variables before use

Change-Id: Ia732e283fa07ec5ece58e49dca2dcc5c61495109
setting the document modified during import is insane

This helps with some huge documents and takes 90% of the time of the
import. The correct next step is to get rid of UNO in the calc style
import.

Change-Id: I6cbd315906405d8f438d99effad122af8edeb01d
don't call XLSX methods in XLS export, related fdo#59762

This should fix a huge number of our xls export crashes. I just picked
my test document for the commit message. I suppose that nearly all
reported XLS export crashes are the same issue.

At the same time this should improve the performance of our XLS and XLSX
export a bit.

Change-Id: Id19e2515e75e10527d3af62d671377bec23f99e8
we need to copy the condition format cell for cell, fdo#86253

Change-Id: Ic090e1b9d13780e7e895a85901d3329cc5703688
add test case for fdo#86253

Change-Id: I943351a9050f78ea3495807570c51e0c7782ead3