Patch: Java: Improve character encoding error messages

[Tom Tromey]

>>>>> "Per" == Per Bothner <per@bothner.com> writes:

Per> One nit - we're moving away from using "accept grave" as "left single
Per> quote" - use '%s' instead.

How about we get rid of them all at once?  I don't think there is any
use of "`" aside from these messages.  I ran s/`/'/ over
gcc/java/*.[chy], and the result still compiles aand a spot check says
it is sane...  if folks are amenable to this, I will read the whole
patch for errors before submitting it for real.

Tom