Updated irun.py to use updated column index range.

Details:
- Updated the irun.py script so that it updates the matlab column index
  range (if found) to reflect the additional columns of data that are
  substituted in. Thanks to Devangi Parikh for recognizing and reporting
  this issue.

build/irun.py

@@ -215,6 +215,25 @@ def main():
 			search = '%8s' % perf
 			newline = re.sub( str(search), ' %7.2f %7.2f %7.2f %6.2f', line )
 
+			# Search for the column index range that would be present if this were
+			# matlab-compatible output. The index range will typically be 1:n,
+			# where n is the number of columns of data.
+			found_index = False
+			for word in words:
+				if re.match( '1:', word ):
+					index_str = word
+					found_index = True
+					break
+
+			# If we find the column index range, we need to update it to reflect
+			# the replacement of one column of data with four, for a net increase
+			# of columns. We do so via another instance of re.sub() in which we
+			# search for the old index string and replace it with the new one.
+			if found_index:
+				last_col = int(index_str[2]) + 3
+				new_index_str = '1:%1s' % last_col
+				newline = re.sub( index_str, new_index_str, newline )
+
 			# If the quiet flag was not give, output the intermediate results.
 			if not quiet:
 				print( newline % ( float(minp), float(avgp), float(maxp), float(stdp) ) )