PR #4907 moved the log level into the engine context, however this caused
issues with logging without the engine being initialized. This commit
reverts the log level to be a static variable.
This commit also implements missing format specifiers for jerry_log.
PR #4907 moved the log level into the engine context, however this caused issues with logging without the engine being initialized. This commit reverts the log level to be a static variable.
This commit also implements missing format specifiers for jerry_log.