[Bugfix] Fix Xvnc linking issues (missing -lpthread and miext/sync/libsync.la)

Fixes bug ID:3287869


git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@4386 3789f03b-4d11-0410-bbf8-ca57d06f2519
2 files changed