Convert the logic (currently present in the form of "rm -rf" calls in
util/kit.sh) for removing files and directories which are tracked by Git
but redundant in release tarballs into a set of .gitattributes rules
which allow the same effect to be achieved using "git archive".
*.sln.in eol=crlf
*.vcxproj.* eol=crlf
+
+.gitignore export-ignore
+/conftools export-ignore
+/doc/design export-ignore
+/doc/dev export-ignore
+/util/** export-ignore
+/util/bindkeys.pl -export-ignore
+/util/mksymtbl.pl -export-ignore