Security update for libreoffice (moderate)

This update for libreoffice to 6.0.4.2 fixes lots of bugs and also the
following issues:

Security issues fixed:

• CVE-2018-10120: The SwCTBWrapper::Read function in
  sw/source/filter/ww8/ww8toolbar.cxx did not validate a customizations
  index, which allowed remote attackers to cause a denial of service
  (heap-based buffer overflow with write access) or possibly have
  unspecified other impact via a crafted document that contains a certain
  Microsoft Word record. (bsc#1089706)
• CVE-2018-10119: sot/source/sdstor/stgstrms.cxx used an incorrect integer
  data type in the StgSmallStrm class, which allowed remote attackers to
  cause a denial of service (use-after-free with write access) or possibly
  have unspecified other impact via a crafted document that uses the
  structured storage ole2 wrapper file format. (bsc#1089705)

Other issues fixed:

• DOCX import: missing table background color
• Bring back offline help per popular demand as lto saves space we could
  use with it bsc#915996

This update was imported from the SUSE:SLE-12-SP3:Update update project.