Fix two trivial Formatter bugs (found by jtreg).
jtreg complains that we allow "%<%" and "%<n". This patch disallows
the special "last argument" case to conversions that don't take
arguments.
We also reject explicitly-numbered arguments such as "%123$n" or
"%123$%" (whether or not a corresponding argument was provided) though
the RI ignores such errors. I've modified the harmony tests to stop
passing unused argument indexes to %n and %%.
This fixes about 80 jtreg complaints (the java/util/Formatter/Basic test is
generated by shell script and seems to accidentally repeat many of the same
tests over and over).
This patch also includes a little more tidying for readability, but
no other functional changes.
2 files changed