Don't allow users to build workspaces as root user

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@15369 3db68df2-c116-0410-a063-a993310a9797
fix r15348

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@15370 3db68df2-c116-0410-a063-a993310a9797
fix r15364 + fixes from FalseVision on setHeldPosition

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@15371 3db68df2-c116-0410-a063-a993310a9797
Handle mods specified on the command line when using the archive builder.

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@15372 3db68df2-c116-0410-a063-a993310a9797
Exclude .git dirs when adding subfolders to the VFS.

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@15373 3db68df2-c116-0410-a063-a993310a9797
fix the fix of setHeldPosition in r15364

git-svn-id: http://svn.wildfiregames.com/public/ps/trunk@15374 3db68df2-c116-0410-a063-a993310a9797
Merge 'remotes/trunk'