Move TWBR register from Wire.cpp to twi.c file.

OS X 10.11 seems to be slower, increasing timeout to 5s on all
platforms to keep things simple.

…source busy" errors on open

Fix typo.

Fix typo in ReadASCIIString.ino

allows people to create board that depends on sam core to use their own Vendor ID instead of Arduino's

now "myboard.build.usb_product" and "myboard.build.usb_manufacturer" from a 3rd party board in "boards.txt" are used in source code. if they aren't defined in "boards.txt", default values are used.

3rd party boards that use sam core can have their own USB product ID that is defined in "boards.txt"

added "build.usb_manufacturer" entry that overrides default macro in USBCore.cpp source file. this isn't really necessary since the source macro is the same as in "boards.txt", but it gives 3rd party board vendors direction in how to have their SAM3X board use their own manufacturer string during USB enumeration.

allow 3rd party boards that depend on sam core to use their own USB vid/pid and manufacturer/product strings

- Remove comment in Arduino AVR Boards platform.txt about -w flag. This
is no longer relevant since the compiler warning level is now set by the
user.
- Fix typos

…m/sandeepmistry/Arduino

Define archive_file_path in Arduino AVR Boards platform.txt to provide
backwards compatibility with IDE versions previous to 1.6.6. The
archive_file_path value set in platform.txt is overridden in IDE 1.6.6+.
This produces avr-ar commands identical to the previous behavior.

Add missing cast to SoftwareSerial::peek() when returning buffered value

fixes #4701

If a sketch contains a link to http://librarymanager/${dropdown}#${filter} or http://boardmanager/${dropdown}#${filter} (for example http://librarymanager/All#OneWire) Library or Board manager will be opened applying the secified filters

…out-bump

Increase wait for upload port timeout to 5s on all platforms

Disable Compile/Run buttons as they get press, and reenable only on function exit.
The launched upload process has now a 2minutes timeout before being terminated forcefully.
10 second after pressing "Upload" the button comes pressable again, but this time the previous upload command gets killed explicitely

This commit introduces the concept of stateful board list (vs. original stateless) and board serial number.

The board is now an "entity" composed by the triplet port/vid/pid. These informations come from libListSerial "light" function. When the board list changes, it triggers a request for the additional infos to libListSerial. These information contains the serial number of the boards.

These brings a lighter and faster scanning process. Some logic has been introduced to handle a board with the S/N only exposed in the bootloader (like 32u4).
In this case the disappearing port acquires the bootloader's S/N

A menu (under Ports menu) shows the currently connected port info and can be used for bugreporting

Corrected comments of rx and tx in a SoftwareSerial example.

…patibility

AVR recipe.ar.pattern backwards compatibility