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PR 4591
* parse.cxx (parser::parse_symbol): Tweak 'print' matching to allow
all the new variants with printd and println.
* staptree.h (struct print_format): Add fields for the new print
variants, and parse_print() to help matching.
* staptree.cxx (print_format::parse_print): New static method to
match the print variants and determine their properties.
(print_format::print): Handle the new print types.
(deep_copy_visitor::visit_print_format): Copy the new fields.
* translate.cxx (c_unparser::visit_print_format): Insert delims and
newlines where appropriate for new print functions.
* stap1.in: Document the new print functions.
testsuite/
* lib/stap_run.exp: Make sure to match the entire output, in case
there are multiple pass/fail messages.
* buildok/printf.stp: Add lines for new print variants.
* parseko/printd01.stp: Make sure that bad printd calls are handled.
* parseko/printd02.stp: Ditto.
* parseko/printd03.stp: Ditto.
* parseko/printd04.stp: Ditto.
* systemtap.base/print.stp: Try a bunch of different print calls.
* systemtap.base/print.exp: Driver for above.
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