Merge remote-tracking branch 'forcedotcom/master'

Conflicts:
	.gitignore
	README.md
	pom.xml
Refactor and WSDLs direct download

- Client JARs generated from the WSDLs are grouped as sub-modules of
the module sfdc-wsc-client.
- Added the 'email-extended' and 'extended' versions of the
'enterprise' and 'partner' client JARs.
- WSDLs can be directly downloaded and refreshed by using the profile
'download-wsdl'.