add ant build helpers

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
fix duplicated dex with support-v7-appcompat

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
add cr-lf in nmea log file

Signed-off-by: Hiroshi Miura <miurahr@linux.com>
Merge branch 'ant_compile_fix'
Merge branch 'fix_nmea_logfile_eol'
doc for building project

Signed-off-by: Hiroshi Miura <miurahr@linux.com>