Fix Python gotcha with module globals, and missing 'cond' in lslextrafuncs.

The previous commit didn't work as expected. "from module import var" freezes the value at load time; changing it later has no effect. A reference to the module needs to be used.

Fix that and the similar problem with LSO. Also revert some "from lslcommon import *" introduced earlier.

That also revealed another bug about missing 'cond' in the import list of lslextrafuncs. This should fix all functions that return values on null key input.

lslopt/lslparse.py

@@ -20,7 +20,7 @@
 
 # TODO: Add info to be able to propagate error position to the source.
 
-from lslcommon import *
+from lslcommon import Key, Vector, Quaternion
 import lslcommon
 import lslfuncs
 import sys, re
@@ -2621,7 +2621,7 @@ list lazy_list_set(list L, integer i, list v)
         self.linestart = True
         self.tok = self.GetToken()
 
-        self.globals = self.BuildTempGlobalsTable() if not IsCalc \
+        self.globals = self.BuildTempGlobalsTable() if not lslcommon.IsCalc \
           else self.funclibrary.copy()
 
         # Restart
@@ -2636,7 +2636,7 @@ list lazy_list_set(list L, integer i, list v)
         self.usedspots = 0
 
         # Start the parsing proper
-        if IsCalc:
+        if lslcommon.IsCalc:
             self.Parse_single_expression()
         else:
             self.Parse_script()