implement delete_existing for AppendUnique and PrependUnique. Finishes #2091.
authorgaryo <garyo@fdb21ef1-2011-0410-befe-b5e4ea1792b1>
Thu, 2 Oct 2008 02:17:58 +0000 (02:17 +0000)
committergaryo <garyo@fdb21ef1-2011-0410-befe-b5e4ea1792b1>
Thu, 2 Oct 2008 02:17:58 +0000 (02:17 +0000)
commitb753afc92d416087dd65f0634c723f106d0f84f8
treea58ecf502de371a7ba37b2742f4bc3a40e3bc052
parent26ab6d070c704b6f7e21522dc0a038022c647643
implement delete_existing for AppendUnique and PrependUnique.  Finishes #2091.

git-svn-id: http://scons.tigris.org/svn/scons/trunk@3529 fdb21ef1-2011-0410-befe-b5e4ea1792b1
doc/man/scons.1
src/engine/SCons/Environment.py
src/engine/SCons/EnvironmentTests.py