[python] Proposed fix for bz10633 (some strings not respecting options->print_max)

[Phil Muldoon]

http://sourceware.org/bugzilla/show_bug.cgi?id=10633

As shown in the bug, strings sourced from pretty printers are not 
respecting the current length of print_max. This is not a bug with the 
pretty printer code itself, but rather a missing check in c_printstr. 
This patch adds a check to the inner loop  while iterating over wchars 
to ensure that print_max is observed.

OK?

Regards

Phil

2009-09-16  Phil Muldoon <pmuldoon@redhat.com>

     * gdb.python/py-prettyprint.exp (gdb_py_test_silent_cmd): New
     Function.
     (run_lang_tests): Add print elements test.

2009-09-16  Phil Muldoon <pmuldoon@redhat.com>

     * c-lang.c (c_printstr): Do not loop past  options->print_max when
     iterating with wchar_iterate.

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