Versions update for 1.2.18
Fix error when doing reverse queries with static columns

patch by graham sanderson; reviewed by slebresne for CASSANDRA-7490
Merge branch 'cassandra-2.0' into cassandra-2.1.0

Conflicts:
	CHANGES.txt
	src/java/org/apache/cassandra/cql3/statements/SelectStatement.java
fix missing test build dep for pig-test
ninja fix LegacySSTable test with new versioned files from 2.0
fix jamm ver in debian
Warn when SSL certs have expired.

Patch by brandonwilliams, reviewed by jasobrown for CASSANDRA-7528
Merge branch 'cassandra-2.0' into cassandra-2.1.0

Conflicts:
	CHANGES.txt
Set stream ID on response for non-Exception Throwables

Patch by Tyler Hobbs; reviewed by Aleksey Yeschenko for CASSANDRA-7470
Merge branch 'cassandra-1.2' into cassandra-2.0

Conflicts:
	CHANGES.txt
	NEWS.txt
	build.xml
	debian/changelog
Merge branch 'cassandra-2.0' into cassandra-2.1.0

Conflicts:
	CHANGES.txt
Make cql3 word count executable
Fix range merging when DES scores are zero
patch by thobbs; reviewed by jbellis for CASSANDRA-7535
merge from 2.0
improve Windows launch scripts
patch by Ala' Alkhaldi and Josh McKenzie for CASSANDRA-7503
(Windows) force range-based repair to non-sequential mode
patch by Josh McKenzie; reviewed by jbellis for CASSANDRA-7541
merge from 2.0
Add missing table name to DROP INDEX responses

Patch and review by Tyler Hobbs and Aleksey Yeschenko for CASSANDRA-7539
memtable_cleanup_threshold and memtable_flush_writers defaults
patch by jbellis; reviewed by bes for CASSANDRA-7551
add cast to float