prefix params cases to dflt- while templates are not set to dlft anymore

src/params/syntax/cls-decl-gen-meth.template

src/params/syntax/cls-decl-meth-static.template

src/params/syntax/cls-decl-meth.template

src/params/syntax/cls-expr-gen-meth-static.template

src/params/syntax/cls-expr-gen-meth.template

src/params/syntax/cls-expr-meth-static.template

src/params/syntax/cls-expr-meth.template

src/params/syntax/func-decl.template

src/params/syntax/func-expr.template

src/params/syntax/gen-func-decl.template

src/params/syntax/gen-func-expr.template

src/params/syntax/gen-meth.template

src/params/syntax/meth.template