Introduces the cypher-commons module and moves some APIs over to it
Move 2.0 cypher compiler to cypher-compiler-2.0 package
Removes 1.9 compiler
Makes sure all of 2.0 compiles correctly
Replace the 1.9 compiler with version from 1.9-maint

And move into cypher-compiler-1.9 package
Merge pull request #1383 from systay/cypher-compilers-mk2

Separates Cypher intro multiple modules