Kcachegrind-Converters

• dprof2calltree(1) convert perl's DProf profiling data to KCachegrind calltree format
• memprof2calltree(1) convert memprof profiling data to KCachegrind calltree format
• op2calltree(1) convert OProfile profiling data to KCachegrind calltree format
• pprof2calltree(1) convert APD profiling data to KCachegrind calltree format