Added minimal implementation for 'eSoftVersion' and 'La_library'.

...e/truffle/r/ffi/impl/interop/base/ESoftVersionResult.java

...truffle/r/ffi/impl/interop/base/ESoftVersionResultMR.java

.../com/oracle/truffle/r/ffi/impl/llvm/TruffleLLVM_Base.java

...c/com/oracle/truffle/r/ffi/impl/managed/Managed_Base.java

...rc/com/oracle/truffle/r/ffi/impl/nfi/TruffleNFI_Base.java

...e.truffle.r.native/fficall/src/truffle_common/base_rffi.c

.../com/oracle/truffle/r/nodes/builtin/base/BasePackage.java

...oracle/truffle/r/nodes/builtin/base/DynLoadFunctions.java

.../com/oracle/truffle/r/nodes/builtin/base/LaFunctions.java

...untime/src/com/oracle/truffle/r/runtime/RCompression.java

...untime/src/com/oracle/truffle/r/runtime/ffi/BaseRFFI.java

.../src/com/oracle/truffle/r/runtime/ffi/NativeFunction.java