Incompatibilities with Unix gprof

GNU gprof and Berkeley Unix gprof use the same data file `gmon.out', and provide essentially the same information. But there are a few differences.

• For a recursive function, Unix gprof lists the function as a parent and as a child, with a calls field that lists the number of recursive calls. GNU gprof omits these lines and puts the number of recursive calls in the primary line.
• When a function is suppressed from the call graph with `-e', GNU gprof still lists it as a subroutine of functions that call it.
• The blurbs, field widths, and output formats are different. GNU gprof prints blurbs after the tables, so that you can see the tables without skipping the blurbs.

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