Standardize Project-Id-Version in PO files.

Set it to "wxWidgets 3.0". Add where missing.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74850 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Set missing Language: headers in PO files.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74851 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Fix wxOSX warnings about int-to-void* casts.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74852 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Add virtual ~wxAnyScrollHelperBase() to fix compiler warning.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74853 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
Revert "using #ifdef wxABORT_ON_CONFIG_ERROR not just #if as elsewhere"

This reverts commit r74656, because it breaks initialization order by
calling OnInit() too late.  See
https://groups.google.com/d/topic/wx-dev/H5vgc2VO7K4/discussion

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@74854 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775