Report #1473 Drop _EXPORTS macros in PCbuild9
I've removed a bunch of obsolete defines. I've also taken the opportunity to fix the pre-link event of sqlite3 and some optimization flags.
diff --git a/PCbuild9/pyd_d.vsprops b/PCbuild9/pyd_d.vsprops
index 8fc10b9..6964c84 100644
--- a/PCbuild9/pyd_d.vsprops
+++ b/PCbuild9/pyd_d.vsprops
@@ -9,7 +9,7 @@
 		Name="VCCLCompilerTool"
 		Optimization="0"
 		InlineFunctionExpansion="0"
-		PreprocessorDefinitions="_DEBUG"
+		PreprocessorDefinitions="_DEBUG;_USERDLL"
 		RuntimeLibrary="3"
 	/>
 	<Tool