big_data_device: Cleanup and speed added
big_data_device: Cleanup and speed added

Cleaned up the code so that the program correctly
responds to signals, shuts down all threads and
exits. Also added speed information to the report.

Signed-off-by: Rudolf J Streif <ea7b312ba06c558b2c165670d6c670057f7928aa@gmail.com>

lillialexis/rvi_core,magnusfeuer/rvi_core,uwiger/rvi_core,afan1/rvi_core,dvthiriez/rvi_core,dvthiriez/rvi_core,lillialexis/rvi_core,lillialexis/rvi_core,advancedtelematic/rvi_core,uwiger/rvi_core,PDXostc/rvi_core,afan1/rvi_core,dvthiriez/rvi_core,PDXostc/rvi_core,magnusfeuer/rvi_core,dvthiriez/rvi_core,afan1/rvi_core,magnusfeuer/rvi_core,PDXostc/rvi_core,linearregression/rvi_core,uwiger/rvi_core,linearregression/rvi_core,advancedtelematic/rvi_core,advancedtelematic/rvi_core,linearregression/rvi_core