* fix in_endpoint buffer size (was too big)
* use the same EP for CDC_ENDPOINT_OUT and CDC_ENDPOINT_IN (different buffers)
* fix CDC_ENDPOINT_IN ep type

This way all the 64 bytes available can be filled up

It seems that

   #include <stdint.h>

is able to undef "min" and "max" previously defined. With this
commit we make sure that they are defined as last.

Fix #10

This reverts commit bc7115b104428f9bea4fdfa1b6af245085f6f542.

Signed-off-by: Jean-Christophe BUDA <jean-christophe.buda@atmel.com>

Some serial libraries opens the serial port BEFORE setting the baudrate.
This patch allows finer control on the reset condition, since it's
checked on open/close (DTR) AND on serial port parameter change.

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