* x0id/jinterface_generic_match:
  jinterface: match/bind added to OtpErlangObject
  fix typo error from recent merge

OTP-12691

Adding these two methods to the OtpErlangObject abstract class makes possible
implementing of pattern matching and variable binding for all types of Erlang
terms. Particular implementations may vary and include additional classes to
define Variable placeholder objects and Bindings objects. Also Parser class
may be added to facilitate creating complex patterns and terms.

The purpose of this commit is to provide low level interface base methods
sufficient for variety of higher level pattern matching/variable binding
implementations.

OtpErlangMap class is re-designed for efficiency (it is based on HashMap now).

All changes are backward-compatible. Detailed test cases implemented.

Transport factory basic implementation added. This makes possible
creating connections between nodes using ssh channels for example.
Default transport factory based on standart Socket/ServerSocket
classes is provided. Modifications are backward compatible.

* lemenkov/use_os_getenv_2:
  fix missing include
  Start using os:getenv/2 fun
  Introduce os:getenv/2

See #535

Signed-off-by: Peter Lemenkov <lemenkov@gmail.com>

For other IDEs, use these as reference. In short, the formatting
style is:

- indentation uses only spaces; each level is 4 positions
- no trailing whitespace
- mostly default Java style formatting (any difference is minor)

- always use {}
- use 'final' as much as possible

OtpInputStream and OtoOutputStream don't need closing (they are
ByteArray*Streams)