build: add a "-Werror" option and fix build error 22/51022/1 accepted/tizen/mobile/20151105.084045 accepted/tizen/tv/20151105.084107 accepted/tizen/wearable/20151105.084117 submit/tizen/20151105.051633 submit/tizen_common/20151229.142028 submit/tizen_common/20151229.144031 submit/tizen_common/20151229.154718
-rw-r--r-- 509 AUTHORS
-rw-r--r-- 878 CMakeLists.txt
-rw-r--r-- 11431 LICENSE.APLv2
-rw-r--r-- 233 NOTICE
drwxr-xr-x - debian
-rw-r--r-- 67 device-manager-plugin-emul.manifest
drwxr-xr-x - include
drwxr-xr-x - packaging
drwxr-xr-x - src