VC8 only has the multi-threaded version of the static run-time libraries, so use that version for single-threaded builds on VC8 and use the single-threaded libraries on the other versions.

Reported by Sohail Somani.


[SVN r34391]

tools/build

@@ -1 +1 @@
-Subproject commit 769ecd0b52e0f1ba5a409099d610a2a4f4fa194a
+Subproject commit 3a8bbe7d0b2e135b4c02735637410911ac3abdac