Resolves: #i74854# fix buttons in MsgBox with info icon

Patch by: hanya.runo@gmail.com
Found by: ooo@catcons.co.uk
Tested by: hdu@apache.org

(cherry picked from commit 02cc651a1b45cbfbdab0aca6b57bff7bdf9e4f2c)

Conflicts:
	basic/source/runtime/methods.cxx
	vcl/inc/vcl/msgbox.hxx

Change-Id: I1656263e189f1a6cfa58436741bfa74ae0e6fffa