Display only 9 subsecond digits instead of 10 for time values, for

consistency and to prevent rounding for days < 30.  Also round off all
trailing zeros, rather than leaving an even number of digits.

src/interfaces/ecpg/pgtypeslib/interval.c

@@ -511,7 +511,7 @@ EncodeInterval(struct tm * tm, fsec_t fsec, int style, char *str)
 					sprintf(cp, ".%06d", Abs(fsec));
 #else
 					fsec += tm->tm_sec;
-					sprintf(cp, ":%013.10f", fabs(fsec));
+ 					sprintf(cp, ":%012.9f", fabs(fsec));
 #endif
 					TrimTrailingZeros(cp);
 					cp += strlen(cp);