this class implements the name mangling rules of the jasper in tomcat4.1.x which is likely to remain for some time
@see org.apache.jasper.JspCompilationContext
@author Anil K. Vijendran
@author Harish Prabandham
@author Pierre Delisle
@author Costin Manolache
@author Steve Loughran (copied from JspCompilationContext)
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