revert condition for SYSTEM_PYTHON to make it better readable

translate_toolkit/makefile.mk

@@ -55,15 +55,15 @@ PYTHONPATH:=$(PWD)$/$(BIN):$(SOLARLIBDIR):$(SOLARLIBDIR)$/python:$(SOLARLIBDIR)$
 .ENDIF			# "$(GUI)"=="WNT"
 .EXPORT: PYTHONPATH
 
-.IF "$(SYSTEM_PYTHON)"!="YES"
-PY_CMD=$(AUGMENT_LIBRARY_PATH) $(WRAPCMD) $(SOLARBINDIR)/python
-.ELSE                   # "$(SYSTEM_PYTHON)"!="YES"
+.IF "$(SYSTEM_PYTHON)" == "YES"
 .IF "$(OS)"=="MACOSX"
 PY_CMD=$(AUGMENT_LIBRARY_PATH) && unset MACOSX_DEPLOYMENT_TARGET && $(WRAPCMD) $(PYTHON)
 .ELSE
 PY_CMD=$(AUGMENT_LIBRARY_PATH) $(WRAPCMD) $(PYTHON)
 .ENDIF
-.ENDIF                  # "$(SYSTEM_PYTHON)"!="YES"
+.ELSE                   # "$(SYSTEM_PYTHON)" == "YES"
+PY_CMD=$(AUGMENT_LIBRARY_PATH) $(WRAPCMD) $(SOLARBINDIR)/python
+.ENDIF                  # "$(SYSTEM_PYTHON)" == "YES"
 
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