Merged revisions 1767-1783 via svnmerge from

Merged revisions 1767-1783 via svnmerge from
http://scons.tigris.org/svn/scons/branches/core

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  r1771 | stevenknight | 2007-01-11 10:42:17 -0600 (Thu, 11 Jan 2007) | 1 line

  0.96.D544 - Fix maximum recursion depth exceeded when writing .sconsign files after using Nodes on two different Windows drive letters.
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  r1772 | stevenknight | 2007-01-11 12:15:07 -0600 (Thu, 11 Jan 2007) | 1 line

  0.96.D545 - Restore caching of file contents in Node.FS.File.get_contents().
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  r1773 | stevenknight | 2007-01-12 10:22:40 -0600 (Fri, 12 Jan 2007) | 1 line

  0.96.D405 - Add MergeFlags() and AddFlags() methods. (Greg Noel) Support recognizing compiler flags that begin with +. (Kent Boortz)
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  r1774 | stevenknight | 2007-01-16 15:58:39 -0600 (Tue, 16 Jan 2007) | 2 lines

  Back out previous modification; the wrong change was distributed.
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  r1775 | stevenknight | 2007-01-16 16:08:26 -0600 (Tue, 16 Jan 2007) | 1 line

  0.96.D546 - Back out previous change that cached get_contents().
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  r1776 | stevenknight | 2007-01-17 14:30:59 -0600 (Wed, 17 Jan 2007) | 1 line

  0.96.D547 - Document the use of ${} to evaluate arbitrary Python code. (Gary Oberbrunner)
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  r1777 | stevenknight | 2007-01-17 15:43:18 -0600 (Wed, 17 Jan 2007) | 1 line

  0.96.D548 - Better man page Scanner example (Matt Doar); add FindPathDirs() to the publicly-available functions, and document it.
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  r1778 | stevenknight | 2007-01-17 17:01:03 -0600 (Wed, 17 Jan 2007) | 1 line

  0.96.D549 - Return MSVC default paths for versions >= 8.0. (Anonymous)
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  r1779 | stevenknight | 2007-01-18 08:37:58 -0600 (Thu, 18 Jan 2007) | 1 line

  0.96.D550 - Windows fix for the rel_path() unit test.
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  r1780 | stevenknight | 2007-01-18 14:01:32 -0600 (Thu, 18 Jan 2007) | 1 line

  0.96.D551 - Fix use of __builtins__ in Subst.py.
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  r1781 | stevenknight | 2007-01-18 16:00:27 -0600 (Thu, 18 Jan 2007) | 1 line

  0.96.D552 - Collect compatibility code in its own SCons.compat subpackage.
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  r1782 | stevenknight | 2007-01-18 16:22:52 -0600 (Thu, 18 Jan 2007) | 1 line

  0.96.D553 - Add the vanilla Python 2.5 subprocess.py module (currently unused) as a baseline for our backwards-compatibility changes to that module.
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  r1783 | stevenknight | 2007-01-18 17:09:39 -0600 (Thu, 18 Jan 2007) | 1 line

  0.96.D554 - Change env.ParseConfig() to use the new subprocess module.
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git-svn-id: http://scons.tigris.org/svn/scons/trunk@1784 fdb21ef1-2011-0410-befe-b5e4ea1792b1