Completes removal bash ARCHIVE loop; Adds basic Makefile for native windows build

git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5338 42af7a65-404d-4744-a932-0658087f49c3

nuttx/README.txt

@@ -18,6 +18,7 @@ README
     - Building
     - Re-building 
     - Build Targets and Options
+    - Native Windows Build
   o Cygwin Build Problems
     - Strange Path Problems
     - Window Native Toolchain Issues
@@ -493,6 +494,35 @@ Build Targets and Options
     useful when adding new boards or tracking down compile time errors and
     warnings (Contributed by Richard Cochran).
 
+Native Windows Build
+--------------------
+
+  The beginnings of a Windows native build are in place but still not full
+  usable as of this writing.  The windows native build logic is currently
+  separate and must be started by:
+
+    make -f Makefile.win
+
+  This build:
+
+    - Uses all Windows style paths
+    - Uses primarily Windows batch commands from cmd.exe, with
+    - A few extensions from GNUWin32 (or MSYS is you prefer)
+
+  In this build, you cannot use a Cygwin or MSYS shell. Rather the build must
+  be performed in a Windows CMD shell. Here is a better shell than than the
+  standard issue, CMD shell:  ConEmu which can be downloaded from:
+  http://code.google.com/p/conemu-maximus5/
+
+  Build Tools.  The build still relies on some Unix-like commands.  I use
+  the GNUWin32 tools that can be downloaded from http://gnuwin32.sourceforge.net/.
+  The MSYS tools are probably also a option but are likely lower performance
+  since they are based on Cygwin 1.3.
+
+  Host Compiler:  I use the MingGW compiler which can be downloaded from
+  http://www.mingw.org/.  If you are using GNUWin32, then it is recommended
+  the you not install the optional MSYS components as there may be conflicts.
+
 CYGWIN BUILD PROBLEMS
 ^^^^^^^^^^^^^^^^^^^^^