Change BK_SHOWPROC to nest subprocesses like 'ps f' so it is easier to see how they relate.
Change BK_SHOWPROC to nest subprocesses like 'ps f' so
it is easier to see how they relate.

ex:

$ BK_SHOWPROC=1 ./bk changes -L
BK  (11273  0.000) ./bk changes -L
BK  (11275  0.004)   bk changes -
BK  (11276  0.027)   bk synckeys -lk file://home/wscott/bk/bk-4.0.x
BK  (11277  0.029)     bk bkd
==== changes -L file://home/wscott/bk/bk-4.0.x ====
BK  (11278  0.031)     bk _probekey
END (11278  0.068)     _probekey = 0
END (11277  0.078)     cd /home/wscott/bk/bk-4.0.x = 0
BK  (11279  0.092)       bk _listkey -r
END (11279  0.149)       _listkey -r = 0
END (11277  0.158)     synckeys = 0
disconnect(): pid 11276 waiting for 11277...
END (11276  0.221)   synckeys -lk file://home/wscott/bk/bk-4.0.x = 0
END (11275  0.226)   changes - = 0
END (11273  0.236) changes -L = 0

bk: 44a3ede9Yg2QRQZ-YKYer0ePEriLkA
bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper,bitkeeper-scm/bitkeeper