Replace some for for() loops with FastEnumeration where i is not needed

Also has the advantage of causing an exception on concurrent modification

Source/SPTableContent.m

@@ -372,12 +372,11 @@ - (void)loadTable:(NSString *)aTable
- (void) setTableDetails:(NSDictionary *)tableDetails
{
	NSString *newTableName;
	NSInteger i, sortColumnNumberToRestore = NSNotFound;
	NSInteger sortColumnNumberToRestore = NSNotFound;
#ifndef SP_CODA
	NSNumber *colWidth;
#endif
	NSArray *columnNames;
	NSDictionary *columnDefinition;
	NSMutableDictionary *preservedColumnWidths = nil;
	NSTableColumn	*theCol;
#ifndef SP_CODA
@@ -566,8 +565,7 @@ - (void) setTableDetails:(NSDictionary *)tableDetails
	[tableContentView setRowHeight:2.0f+NSSizeToCGSize([@"{ǞṶḹÜ∑zgyf" sizeWithAttributes:@{NSFontAttributeName : tableFont}]).height];

	// Add the new columns to the table and filterTable
	for ( i = 0 ; i < (NSInteger)[dataColumns count] ; i++ ) {
		columnDefinition = NSArrayObjectAtIndex(dataColumns, i);
	for (NSDictionary *columnDefinition in dataColumns ) {

		// Set up the column
		theCol = [[NSTableColumn alloc] initWithIdentifier:[columnDefinition objectForKey:@"datacolumnindex"]];
@@ -1810,18 +1808,15 @@ - (NSString *)argumentForRow:(NSUInteger)rowIndex ofTable:(NSString *)tableForCo
 */
- (IBAction)addRow:(id)sender
{
	NSMutableDictionary *column;
	NSMutableArray *newRow = [NSMutableArray array];
	NSUInteger i;

	// Check whether table editing is permitted (necessary as some actions - eg table double-click - bypass validation)
	if ([tableDocumentInstance isWorking] || [tablesListInstance tableType] != SPTableTypeTable) return;

	// Check whether a save of the current row is required.
	if ( ![self saveRowOnDeselect] ) return;

	for ( i = 0 ; i < [dataColumns count] ; i++ ) {
		column = NSArrayObjectAtIndex(dataColumns, i);
	for (NSDictionary *column in dataColumns) {
		if ([column objectForKey:@"default"] == nil || [[column objectForKey:@"default"] isNSNull]) {
			[newRow addObject:[NSNull null]];
		} else if ([[column objectForKey:@"default"] isEqualToString:@""]
@@ -3146,10 +3141,8 @@ - (NSString *)argumentForRow:(NSInteger)row excludingLimits:(BOOL)excludeLimits
 */
- (BOOL)tableContainsBlobOrTextColumns
{
	NSUInteger i;

	for ( i = 0 ; i < [dataColumns count]; i++ ) {
		if ( [tableDataInstance columnIsBlobOrText:[NSArrayObjectAtIndex(dataColumns, i) objectForKey:@"name"]] ) {
	for (NSDictionary *column in dataColumns) {
		if ( [tableDataInstance columnIsBlobOrText:[column objectForKey:@"name"]] ) {
			return YES;
		}
	}