Rephrased the introduction, added missing commas and my name for Unicode

Misc/maintainers.rst

 Maintainers Index
 =================
 
-This document cross references Python Modules (first table) and platforms
-(second table) with the Tracker user names of people who are experts
-and/or resources for that module or platform.  This list is intended
-to be used by issue submitters, issue triage people, and other issue
-participants to find people to add to the nosy list or to contact
-directly by email for help and decisions on feature requests and bug
-fixes.  People on this list may be asked to render final judgement on a
-feature or bug.  If no active maintainer is listed for a given module,
-then questionable changes should go to python-dev, while any other issues
-can and should be decided by any committer.
+This document has tables that list Python Modules, Tools, Platforms and
+Interest Areas and names for each item that indicate a maintainer or an
+expert in the field.  This list is intended to be used by issue submitters,
+issue triage people, and other issue participants to find people to add to
+the nosy list or to contact directly by email for help and decisions on
+feature requests and bug fixes.  People on this list may be asked to render
+final judgement on a feature or bug.  If no active maintainer is listed for
+a given module, then questionable changes should go to python-dev, while
+any other issues can and should be decided by any committer.
 
-The last part of this document is a third table, listing broader topic
-areas in which various people have expertise.  These people can also
-be contacted for help, opinions, and decisions when issues involve
-their areas.
+The Platform and Interest Area tables list broader fields in which various
+people have expertise.  These people can also be contacted for help,
+opinions, and decisions when issues involve their areas.
 
 If a listed maintainer does not respond to requests for comment for an
 extended period (three weeks or more), they should be marked as inactive
@@ -99,7 +97,7 @@ fileinput
 fnmatch
 formatter
 fpectl
-fractions           mark.dickinson rhettinger
+fractions           mark.dickinson, rhettinger
 ftplib
 functools
 gc                  pitrou
@@ -132,7 +130,7 @@ macpath
 mailbox             andrew.kuchling
 mailcap
 marshal
-math                mark.dickinson rhettinger
+math                mark.dickinson, rhettinger
 mimetypes
 mmap
 modulefinder        theller, jvr
@@ -289,7 +287,7 @@ time and dates      lemburg
 testing             michael.foord, pitrou
 threads
 tracker
-unicode             lemburg
+unicode             lemburg, ezio.melotti
 version control
 windows
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