Added top-level .cvsignore file

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@36 268f45cc-cd09-0410-ab3c-d52691b4dbfc

WebCore/.cvsignore

+Makefile.vars
+Makefile.rules
+Makefile
+config.status
+config.log
+config.h
+config.cache