NCBC-399: Standardize to SPACES for indenting in source files

Replaced all tabs \t with four spaces per the VS standard

Change-Id: I8049ff3e2d3c7da33c6209c9183c0836afa95e67
Reviewed-on: http://review.couchbase.org/34397
Reviewed-by: Brett Lawson <brett19@gmail.com>
Tested-by: Jeffry Morris <jeffrymorris@gmail.com>