remove ifdef'd bevel code, current bevel works better then the previous code.

reduce strlen check in texttool_suggest_add()
use 'del list[:]' rather then 'list[:] = []' in python scripts which clear lists.

build_files/cmake/cmake_consistency_check.py

@@ -222,8 +222,8 @@ def cmake_get_src(f):
             '''
 
             # reset
-            sources_h[:] = []
-            sources_c[:] = []
+            del sources_h[:]
+            del sources_c[:]
 
     filen.close()