make clangplugin analyzer use internally a PCH to speed things up

This generally makes the sharedvisitor performance reasonable.
The only costly thing that remains is compiling the large sharedvisitor.cxx,
which with optimizations takes quite some time, but there's ccache for that.

Change-Id: Iffa5fc9df34cdb5edf1cde34fc558fd007ef8263
Reviewed-on: https://gerrit.libreoffice.org/78569
Tested-by: Jenkins
Reviewed-by: Luboš Luňák <l.lunak@collabora.com>

0 files changed, 0 insertions, 0 deletions