scimoz: headless: start of Mac support

(integrated from komodo (trunk) change 82661 by toddw)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@13858 b87d16e7-d29f-4ee1-b5ec-817d645d335f
scimoz: cocoa: doesn't use scintilla_new, so don't include it

(integrated from komodo (trunk) change 82662 by toddw)

git-svn-id: http://svn.openkomodo.com/repos/openkomodo/trunk@13859 b87d16e7-d29f-4ee1-b5ec-817d645d335f