branches/zip: Fix most MSVC (Windows) compilation warnings.

lock_get_table(), locks_row_eq_lock(), buf_page_get_mutex(): Add return
after ut_error.  On Windows, ut_error is not declared as "noreturn".

Add explicit type casts when assigning ulint to byte to get rid of
"possible loss of precision" warnings.

struct i_s_table_cache_struct: Declare rows_used, rows_allocd as ulint
instead of ullint.  32 bits should be enough.

fill_innodb_trx_from_cache(), i_s_zip_fill_low(): Cast 64-bit unsigned
integers to longlong when calling Field::store(longlong, bool is_unsigned).
Otherwise, the compiler would implicitly convert them to double and
invoke Field::store(double) instead.

recv_truncate_group(), recv_copy_group(), recv_calc_lsn_on_data_add():
Cast ib_uint64_t expressions to ulint to get rid of "possible loss of
precision" warnings.  (There should not be any loss of precision in
these cases.)

log_close(), log_checkpoint_margin(): Declare some variables as ib_uint64_t
instead of ulint, so that there won't be any potential loss of precision.

mach_write_ull(): Cast the second argument of mach_write_to_4() to ulint.

OS_FILE_FROM_FD(): Cast the return value of _get_osfhandle() to HANDLE.

row_merge_dict_table_get_index(): Cast the parameter of mem_free() to (void*)
in order to get rid of the bogus MSVC warning C4090, which has been reported
as MSVC bug 101661:
<http://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=101661>

row_mysql_read_blob_ref(): To get rid of a bogus MSVC warning C4090,
drop a const qualifier.

row/row0mysql.c

@@ -230,7 +230,7 @@ row_mysql_read_blob_ref(
 	ulint		col_len)	/* in: BLOB reference length
 					(not BLOB length) */
 {
-	const byte*	data;
+	byte*	data;
 
 	*len = mach_read_from_n_little_endian(ref, col_len - 8);