If external module is used in typeOf expression, it doesnt add runtime dependency
Always resolve call expression arguments in typecheck
Test case for 'this' used as indexer
Fix typeChecking for signatures so that their body is typeChecked
Fix the test baselines after picking up changes from develop
    Add support for a 'codepage' option for the compiler.

    On platforms that support it, we will use that codepage option to interpret and
    convert files that we read in.  This, for example, allows users to read in files
    encoded with gb18030 (codepage 549360).

Conflicts:
	src/compiler/precompile.ts
	src/compiler/resources/diagnosticCode.generated.ts
	src/compiler/resources/diagnosticInformationMap.generated.ts
	src/compiler/resources/diagnosticMessages.json
	src/harness/fourslash.ts
	src/harness/harness.ts
	tests/runners/projects/runner.ts
	tests/runners/unittest/unittestrunner.ts
Only offer the --codepage flag if the platform supports it.
Update LKG
Update the language spec to the latest
Update LKG