Merge branch 'master' of github.com:rakudo/rakudo

docs/ChangeLog

@@ -1,3 +1,11 @@
+New in 2011.05 release
++ added a call counter for builtins in Perl 6-level subroutines
++ gcd (greatest common divisor) and lcm (largest common multiple) operators
++ build system improvements
++ fix relational operators when used with NaN
++ implemented Int.base
++ speedup smart-matching against numbers and Str.comb with default arguments
+
 New in 2011.04 release
 + implemented Str.indent
 + A new, much simpler API and implemention of IO::Socket::INET

tools/sublog-report.pl

@@ -15,6 +15,19 @@
 # each subroutine and the top eight callers for each:
 #      $ perl tools/sublog-report.pl sub.log
 #
+# The output is of the form
+#
+# <count> <routinename> (<subid>)
+#       <callcount> <caller> (<callersubid>)
+#       <callcount> <caller> (<callersubid>)
+#       ...
+# <callcount> <routinename> (<subid>)
+# ...
+#
+# where <count> is the number of times that <routinename>
+# has been called. The indented lines list the routines
+# that called it (<caller>), and how often it called them
+# (<callcount>).
 
 use warnings;
 use strict;