#1143 removed A.BUILD.PATH defined it expanded in code

also started using DirectoryDelimiter
and upgraded arduino IDE version
See https://bugs.eclipse.org/bugs/show_bug.cgi?id=560330 for why
A.BUILD.PATH={ProjDirPath}{DirectoryDelimiter}{ConfigName} doesn't work

Author: jantje

io.sloeber.core/config/pre_processing_platform_default.txt

@@ -5,12 +5,12 @@ A.ARCHIVE_FILE=arduino.ar
 A.ARCHIVE_FILE_PATH={A.BUILD.PATH}/{A.ARCHIVE_FILE}
 A.ALT_SIZE_COMMAND="{A.COMPILER.PATH}{A.COMPILER.SIZE.CMD}" --format=avr --mcu={A.BUILD.MCU} "{A.BUILD.PATH}/{A.BUILD.PROJECT_NAME}.elf"
 A.archive_file_path={A.BUILD.PATH}/{A.ARCHIVE_FILE}
-A.runtime.IDE.version=10802
-A.BUILD.SYSTEM.PATH={A.RUNTIME.PLATFORM.PATH}/system
+A.runtime.IDE.version=10812
+A.BUILD.SYSTEM.PATH={A.RUNTIME.PLATFORM.PATH}{DirectoryDelimiter}system
 A.SERIAL.PORT={JANTJE.COM_PORT}
-A.BUILD.PATH={ProjDirPath}/{ConfigName}
 A.BUILD.PROJECT_NAME={ProjName}
-A.PACKAGES={eclipse_home}/arduinoPlugin/packages
+A.PACKAGES={eclipse_home}{DirectoryDelimiter}arduinoPlugin{DirectoryDelimiter}packages
+
 
 #quick fix for issue #810
 A.UPLOAD.SPEED=19200