Updated platform.txt

See: arduino/Arduino#1790 and arduino/Arduino@fb32435

Author: Lauszus

Firmware/hardware/Balanduino/avr/platform.txt

@@ -17,7 +17,7 @@ compiler.c.cmd=avr-gcc
 compiler.c.flags=-c -g -Os -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 -fno-exceptions -ffunction-sections -fdata-sections -MMD
 compiler.ar.cmd=avr-ar
@@ -84,7 +84,7 @@ 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:{sketchbook.path}/hardware/Balanduino/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