Moving old toolchains to attic directory. Only leaving updated BG files. Bring back and update files as needed, but prefer to improve CMake scripts.

git-svn-id: https://subversion.assembla.com/svn/qmcdev/trunk@6645 e5b18d87-469d-4833-9cc0-8cdfa06e9491

config/README

@@ -0,0 +1,8 @@
+Toolchains for systems not fully supported by the CMake build system
+automatically. It is preferred to expand the capabilities of the
+automatic system instead of adding custom machine specific
+workarounds, but this may not be possible.
+
+Old toolchains are stored in attic directory. These need to be updated
+and simplified for the current build system. They may also give ideas
+for what may be needed on specific systems.