seed packimages from SRCDIR instead of OURDIR (fix build breaker)
seed packimages from SRCDIR instead of OURDIR (fix build breaker)

- in the long run we should likely either move packimages to icon-themes
  or the icon-themes to postprocess to have them together

Change-Id: I4d0d9d4035600191bb16565efb8756aab2a447c2
Reviewed-on: https://gerrit.libreoffice.org/2235
Reviewed-by: Björn Michaelsen <e7b7acdb701579ea6e93eb181deb22e8c89dcb50@canonical.com>
Tested-by: Björn Michaelsen <e7b7acdb701579ea6e93eb181deb22e8c89dcb50@canonical.com>

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core