src/libpcp/src/util.c: more __pmProcessCreate() changes
src/libpcp/src/util.c: more __pmProcessCreate() changes

Do the {infd,outfd} -> {fromChild,toChild} name change in the
*nix version of this function.

Add a call to __pmInitLocks() from pmSetProgname() so we have a place
to do some early (non-lock) initialization.

adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp,adfernandes/pcp