SPV Version: Emit the requested SPIR-V version, not the header version.

Fixes #1236.
diff --git a/Test/baseResults/hlsl.intrinsics.f3216.frag.out b/Test/baseResults/hlsl.intrinsics.f3216.frag.out
index fa07ada..b6d6587 100644
--- a/Test/baseResults/hlsl.intrinsics.f3216.frag.out
+++ b/Test/baseResults/hlsl.intrinsics.f3216.frag.out
@@ -269,7 +269,7 @@
 0:?   Linker Objects
 0:?     '@entryPointOutput' (layout( location=0) out 4-component vector of float)
 
-// Module Version 10200
+// Module Version 10000
 // Generated by (magic number): 80003
 // Id's are bound by 106