There seems to be no point in configuring the compiler argument per
project. This argument will be deleted soon anyway, when we remove
support for JDK 1.6 & 1.7.
Also remove `disableDeprecatedJvmTargetWarning`. It didn't have any
effect in all modules where it was applied because these modules
reassign `freeCompilerArgs` anyway, with
`-Xsuppress-deprecated-jvm-target-warning` in it.
Dex can't merge class files from both android-extensions-runtime and parcelize-runtime, so we have to keep only one copy of each class.
Instead of @Deprecated annotations, there are new diagnostics (without quick-fixes yet).
The goal is to allow simple usages (@Parcelize alone) but forbid kotlinx.android.synthetic.Parceler usage.
