wxOSX Retina fixes: wxImageList::GetSize().

wxImageList returns size of its bitmap as pixel size, i.e.  twice the
displayed screen on HiDPI screens.  Unfortunately,
wxImageList::GetSize() is used heavily in (generic) GUI drawing code,
e.g.  to properly size wxListCtrl's icon columns.  As wxImageList is
used primarily by controls, it seems reasonable to adjust for scaling
here, rather than requiring all users of the class to do it.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75351 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Remove wx/generic/colrdlgg.h from common GUI headers.

This header is not used in all ports, notably not in wxMSW nor wxGTK.

See #15753.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75395 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
remove WXWIN_COMPATIBILITY_2_6, add WXWIN_COMPATIBILITY_3_0
closes #15792

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75532 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Update the versions of the libraries built by wx_vc10.sln.

Use "31" or "310" in the library names instead of "30".

Closes #15810.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75562 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Override Do{Freeze,Thaw}() instead of {Freeze,Thaw}() in wxPropGrid code.

{Freeze,Thaw}() themselves are not virtual any more, so overriding them
doesn't really work and it is unnecessary to reimplement the reference
counting already done by the base class anyhow, so override the DoXXX()
versions instead.

Closes #15877.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@75640 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
patched for ICC; sync with upstream; replace our project files