Add %z and %x to printf backend #5424
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%z is a C99 format used for size_t and was not included in any printf. On the 8266 it's a no-op as size_t==int, so ignore it and things just work. %x lowercase support added back in (wasn't present in nano-printf).
Previous commit was a hand build and copy, this one used the full toolchain and should not include atexit().
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%z is a C99 format used for size_t and was not included in any printf.
On the 8266 it's a no-op as size_t==int, so ignore it and things just
work.
%x lowercase support added back in (wasn't present in nano-printf).