Reduce memory consumption of IndexSummary
patch by jbellis; reviewed by vijay for CASSANDRA-5506
Merge branch 'cassandra-1.2' into trunk
ghetto-merge from cassandra 1.2
fix merge issues
keep a local copy of indexInterval in summary builder so we don't need to pass it to maybeAddEntry
meant to squash this in too
remove unused code/deprecations
remove unused cql2 describeSchemaVersions
KeyIterator no longer needs to hold onto the Descriptor
Fix use of CQL3 functions with descending clustering order

patch by slebresne; reviewed by iamaleksey for CASSANDRA-5472
Merge branch 'cassandra-1.2' into trunk
unbork changelog entries for merges from 1.1.9 and 1.1.10
Merge branch 'cassandra-1.2' into trunk
exclude *-sources.jar from the classpath
Merge branch 'cassandra-1.1' into cassandra-1.2
Merge branch 'cassandra-1.2' into trunk
Add CQL support for CAS

patch by slebresne; reviewed by iamaleksey for CASSANDRA-5443
Fix counter updates broken by 5443 patch
add read support for CL.SERIAL
patch by jbellis; reviewed by slebresne for CASSANDRA-5441
fix build