Move SourcePawn headers out of public/ into sourcepawn/include.

AMBuildScript

@@ -325,7 +325,7 @@ class SMConfig(object):
       os.path.join(context.currentSourcePath, 'sdk'),
       os.path.join(builder.sourcePath, 'public'),
       os.path.join(builder.sourcePath, 'public', 'extensions'),
-      os.path.join(builder.sourcePath, 'public', 'sourcepawn'),
+      os.path.join(builder.sourcePath, 'sourcepawn', 'include'),
       os.path.join(builder.sourcePath, 'public', 'amtl'),
     ]
     return compiler

core/logic/AMBuilder

@@ -5,7 +5,7 @@ binary = SM.Library(builder, 'sourcemod.logic')
 binary.compiler.cxxincludes += [
   os.path.join(builder.sourcePath, 'core', 'logic'),
   os.path.join(builder.sourcePath, 'public'),
-  os.path.join(builder.sourcePath, 'public', 'sourcepawn'),
+  os.path.join(builder.sourcePath, 'sourcepawn', 'include'),
   os.path.join(builder.sourcePath, 'public', 'amtl'),
   os.path.join(SM.mms_root, 'core', 'sourcehook')
 ]