Log Message:
Fix some my_time_t (long) v.s. time_t problem introduced MySQL 5.1.49.
This problem results mysqld to exit on start up.

		5.1/i386	5.1/amd64	5.99.38/i386	5.99.38/amd64
my_time_t	int32_t		int64_t		int32_t		int64_t
time_t		int32_t		int32_t		int64_t		int64_t

I confirmed to mysqld running on these four case except 5.99.38/i386.

Bump PKG_REVISION.