Bump VERSION to 3.3.0.rc.4.
Get rid of Script::Value#{line,filename}.

These values were unused and for the most part not set on values.
Make index() return a DeprecatedFalse object rather than null.

Closes #1127
Merge branch 'master' into bleeding-edge

Conflicts:
	VERSION
Revert "Make index() return a DeprecatedFalse object rather than null."

This reverts commit 6607785d256219083103d2cba5e10c581b30d3b5.
Add a changelog entry about index() returning null.
Merge branch 'null-index' into bleeding-edge