Apple has purchased the iCloud.com domain name for $4.5 million, according to a new report. Citing an anonymous tipster, GigaOM reports that iCloud.com was until recently used by Sweden-based Xcerion for its cloud-based storage service, which has since been rebranded as CloudMe. The source, who is said to be familiar with the company, said Xcerion sold the iCloud domain to Apple for $4.5 million, although the Whois database still lists Xcerion as…