Cast to "const int" explicit instead of "const"
Cast to "const int" explicit instead of "const"

__pcc_in->data.leaf.capt0.range.start and .end are casted to "const"
in generate(). Compiling the generated code with "gcc -std=gnu99 -Wall",
the compiler warns as follows:

    peg/java.c:1815:5: warning: type defaults to ‘int’ in type name [-Wimplicit-int]
	 eatComma(auxil, _0s);
	 ^~~~~~~~

This change suppresses the warning.

Signed-off-by: Masatake YAMATO <bdfff7006d3a5967c7c741d652a74f5445442e11@redhat.com>

enechaev/packcc