This patch modifies portage.py to use a temporary file per pid when doing cache
regeneration. This speeds things up a bit, if several instances of portage are
working on the cache at the same time.

Index: pym/portage.py
===================================================================
RCS file: /var/cvsroot/gentoo-src/portage/pym/portage.py,v
retrieving revision 1.524.2.76
diff -u -r1.524.2.76 portage.py
--- pym/portage.py	29 May 2005 12:40:08 -0000	1.524.2.76
+++ pym/portage.py	4 Jun 2005 22:17:41 -0000
@@ -5302,9 +5302,9 @@
 			writemsg("Generating cache entry(0) for: "+str(myebuild)+"\n",1)
 
 			if self.tmpfs:
-				mydbkey = self.tmpfs+"/aux_db_key_temp"
+				mydbkey = self.tmpfs+"/aux_db_key_temp."+str(os.getpid())
 			else:
-				mydbkey = self.depcachedir+"/aux_db_key_temp"
+				mydbkey = self.depcachedir+"/aux_db_key_temp."+str(os.getpid())
 
 			# XXX: Part of the gvisible hack/fix to prevent deadlock
 			# XXX: through doebuild. Need to isolate this somehow...