Put compile options from code into parse_transfrom/2 options variable.

Put compile options from code (i.e. -compile(myoption1)) into the options variable used as second argument in parse_transform/2. This makes it possible to access all compile options (i.e. the ones specified in the command-line and the ones specified in code) in a consistent way.

```erlang
-module(dummy_module).

-compile({parse_transform, dummy_transform}).
-compile(dummy_transform_option1).
```

```erlang
-module(dummy_transform).

-export([parse_transform/2]).

parse_transform(Forms, Opts) ->
    true = lists:member(dummy_transform_option1, Opts),
    Forms.
```
This contribution has been discussed in http://erlang.org/pipermail/erlang-patches/2014-May/004668.html