Well, I "fixed" it by applying the following patch.  Close your eyes now, lest they explode:

--- SConstruct.orig    2013-01-29 15:37:01.000000000 -0700
+++ SConstruct    2013-08-01 15:20:08.695760012 -0600
@@ -561,16 +561,14 @@
     """Creates soname."""
 
     target = str(env.subst(target))
-    import re
-    soPattern = re.compile('(.*)\.[0-9]*\.[^.]*$', re.I|re.S)
-    soname = soPattern.findall(path.basename(target))
-
+    from subprocess import check_output
+    basename = path.basename(target)
+    if len(basename) == 0:
+      return ''
+    soname = check_output('sed \'s/\.[0-9]*\.[0-9]*$//\' <<< ' + basename, shell=True).rstrip()
     if len(soname) > 0:
-        return prefix + soname[0] + suffix  
+        return prefix + soname + suffix
     else:
-        if env['PLATFORM']=="darwin":
-            return prefix + path.basename(target) + suffix
-
         return ''
    
 
@@ -1103,16 +1101,14 @@
 def SymlinkReadableLibname(files):
     """ Generate symbolik link with more readable library name."""
    
+    from subprocess import check_output
     suffix = env.subst('$SHLIBVERSIONSUFFIX')
     simplesuffix = env.subst('$SHLIBSUFFIX')
     result = []
-    import re
-    soPattern = re.compile('(.*)\.[0-9]*\.[0-9]*$', re.I|re.S)
-    sonameversion = soPattern.findall(path.basename(env.subst('$LIBRARY_VERSION')))[0]
    
     for fname in files:
         fname = str(fname)
-        soname = soPattern.sub(r'\1', fname)
+        soname = check_output('sed \'s/\.[0-9]*\.[0-9]*$//\' <<< ' + fname, shell=True).rstrip()
         versionname = fname.replace('.' + env.subst('$LIBRARY_VERSION'), '')
         simple = fname.replace(suffix, simplesuffix)
 

But it would be much, much better if the python regular expression engine were fixed.  Are any of the python maintainers seriously looking at the upstream patch?  If not, could you please?

--
Jerry James
http://www.jamezone.org/