Replace gcc -w option to -Wall

Replace gcc -w option to -Wall

Gcc -Wall option enhance code quailty and delete -w option which is
suppress warning. To clean code successfully follow bugs or warnings are fixed.

 - Cmake : -Wall -> -w and clean duplicate commands
 - Delete line : unused variables
 - strncpy : check null terminator and buffer size
 - exciplit header include
 - printf formatting, sprintf truncation
 - convert unmatched type
 - fix typo

Change-Id: I049de491b2e832aa27900b046984306ea3aeb318
Signed-off-by: Kwang Son <k.son@samsung.com>