Update SourcePawn (#2052)

* Update SourcePawn

* Fix using SourceMod version as SourcePawn version

AMBuildScript

@@ -773,6 +773,8 @@ if SM.use_auto_versioning():
   )
 
 class SPRoot(object):
+  def __init__(self):
+    self.generated_headers = SM.generated_headers
   # SourcePawn's build scripts are always one-offs, and attach the current target
   # to the builder, so we have to provide a shim to our StaticLibrary() method.
   def StaticLibrary(self, builder, name):

plugins/include/float.inc

@@ -275,7 +275,6 @@ stock int RoundFloat(float value)
  * User defined operators.
  */
 #if !defined __sourcepawn2__
-#pragma rational Float
 
 // Internal aliases for backwards compatibility.
 native float __FLOAT_MUL__(float a, float b) = FloatMul;