Update platform.txt for arduino-avr-toolchain-nightly-gcc-4.8.1

This updates the platform.txt with the latest version from the
experimental Arduino IDE version with updated toolchain
(ide-1.5.x-avr-toolchain-gcc-4.8.1 branch):

https://github.com/arduino/Arduino/blob/a111f824c9dd5aa5579b64acfb0f81f157ac3658/hardware/arduino/avr/platform.txt

Apart from some cosmetical changes, this makes uploading work with the
IDE built from that branch. However, it also breaks uploading on Linux
with the regular IDE.

Author: matthijskooijman

avr/platform.txt

@@ -1,6 +1,7 @@
 # Pinoccio AVR Core and platform.
 name=Pinoccio AVR boards
 version=1.0.0
+
 # AVR compile variables
 # --------------------- 
 
@@ -10,7 +11,7 @@ compiler.c.cmd=avr-gcc
 compiler.c.flags=-c -g -Os -w -std=gnu99 -ffunction-sections -fdata-sections -MMD
 compiler.c.elf.flags=-Os -Wl,--gc-sections
 compiler.c.elf.cmd=avr-gcc
-compiler.S.flags=-c -g -assembler-with-cpp
+compiler.S.flags=-c -g -x assembler-with-cpp
 compiler.cpp.cmd=avr-g++
 compiler.cpp.flags=-c -g -Os -w -std=gnu++98 -fno-exceptions -ffunction-sections -fdata-sections -MMD
 compiler.ar.cmd=avr-ar
@@ -60,8 +61,6 @@ recipe.size.regex.eeprom=^(?:\.eeprom)\s+([0-9]+).*
 
 tools.avrdude.cmd.path={runtime.ide.path}/hardware/tools/avr/bin/avrdude
 tools.avrdude.config.path={runtime.ide.path}/hardware/tools/avr/etc/avrdude.conf
-tools.avrdude.cmd.path.linux={runtime.ide.path}/hardware/tools/avrdude
-tools.avrdude.config.path.linux={runtime.ide.path}/hardware/tools/avrdude.conf
 
 tools.avrdude.upload.params.verbose=-v -v -v -v
 tools.avrdude.upload.params.quiet=-q -q
@@ -77,5 +76,11 @@ tools.avrdude.erase.pattern="{cmd.path}" "-C{config.path}" {erase.verbose} -p{bu
 
 tools.avrdude.bootloader.params.verbose=-v -v -v -v
 tools.avrdude.bootloader.params.quiet=-q -q
-tools.avrdude.bootloader.pattern="{cmd.path}" "-C{config.path}" {bootloader.verbose} -p{build.mcu} -c{protocol} {program.extra_params} "-Uflash:w:{runtime.ide.path}/hardware/arduino/avr/bootloaders/{bootloader.file}:i" -Ulock:w:{bootloader.lock_bits}:m
+tools.avrdude.bootloader.pattern="{cmd.path}" "-C{config.path}" {bootloader.verbose} -p{build.mcu} -c{protocol} {program.extra_params} "-Uflash:w:{runtime.platform.path}/bootloaders/{bootloader.file}:i" -Ulock:w:{bootloader.lock_bits}:m
+
 
+# USB Default Flags
+# Default blank usb manufacturer will be filled it at compile time
+# - from numeric vendor ID, set to Unknown otherwise
+build.usb_manufacturer=
+build.usb_flags=-DUSB_VID={build.vid} -DUSB_PID={build.pid} '-DUSB_MANUFACTURER={build.usb_manufacturer}' '-DUSB_PRODUCT={build.usb_product}'