Major redo

 - rank > ndims
 - no merged read
 - global vs local domains
 - remove required type info for reads
Many fixes to domain operations and tests
Fixed Domains and addded readSizeInternal
Fixed splashtools, renamed rank/data
Remove unused member in Domain
Fixed documentation for PDomainC
Moved DCDataType outside of DCDataSet
Removed deprecated MergedReadTest
Added documentation and newline at EOF
Fix examples
Remove virtual descructor for Dimensions
Fixed documentation and improved DomainsTest

 - DomainsTest now checks for irregular grid sizes
Merge pull request #32 from ComputationalRadiationPhysics/fix_domains

Fix domains, major redo