Use the "en_US_POSIX" locale to ensure 12-hour time settings don't affect the be…

…havior of NSDateFormatter on the iPhone.

Signed-off-by: Ben Copsey <ben@allseeing-i.com>

@@ -24,6 +24,7 @@ static NSDateFormatter *dateFormatter = nil;
 + (void)initialize
 {
 	dateFormatter = [[NSDateFormatter alloc] init];
+	[dateFormatter setLocale:[[[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"] autorelease]];
 	[dateFormatter setTimeZone:[NSTimeZone timeZoneWithAbbreviation:@"UTC"]];
 	[dateFormatter setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss'.000Z'"];
 }

@@ -87,7 +87,7 @@ static NSString *sharedSecretAccessKey = nil;
 {
 	NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
 	// Prevent problems with dates generated by other locales (tip from: http://rel.me/t/date/)
-	[dateFormatter setLocale:[[[NSLocale alloc] initWithLocaleIdentifier:@"en_US"] autorelease]];
+	[dateFormatter setLocale:[[[NSLocale alloc] initWithLocaleIdentifier:@"en_US_POSIX"] autorelease]];
 	[dateFormatter setDateFormat:@"EEE, d MMM yyyy HH:mm:ss Z"];
 	[self setDateString:[dateFormatter stringFromDate:date]];	
 }