* added get_timezone_offset() to kernel, which returns the offset in seconds

* made FAT add-on use get_timezone_offset(), this time correctly adjusted for
  the difference in units (minutes/seconds)
This makes the times in our FAT-fs agree with Linux again, at least :-)

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37905 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/real_time_clock.h

@@ -13,13 +13,16 @@
 #include <time.h>
 
 
+struct kernel_args;
+
+
 #define RTC_EPOCH_BASE_YEAR	1970
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-status_t rtc_init(kernel_args *args);
+status_t rtc_init(struct kernel_args *args);
 bigtime_t rtc_boot_time(void);
 	// Returns the time at which the system was booted in microseconds since Jan 1, 1970 UTC.
 
@@ -28,6 +31,8 @@ bigtime_t rtc_boot_time(void);
 uint32 rtc_tm_to_secs(const struct tm *t);
 void rtc_secs_to_tm(uint32 seconds, struct tm *t);
 
+uint32 get_timezone_offset();
+
 bigtime_t _user_system_time(void);
 status_t _user_set_real_time_clock(uint32 time);
 status_t _user_set_timezone(int32 timezoneOffset);