cocoa: compiler directive exclusion for i386 only code in themedrawings

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@47134 4005530d-fff6-0310-9dd1-cebe43e6787f
cocoa: replace hitheme drawing of status bar with NSCell drawing. x86_64 target should compile now

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@47135 4005530d-fff6-0310-9dd1-cebe43e6787f