a simple build system as an alternative to the bloated autotools.

it consists of:
* configure in project root
* build tree with configure.pf and makefiles in build/

libpf depends on gcc, gnu libc, pthread, libdl and libm.

configure.pl resembles the standard configure script.
this generates libpf.pc, Makefile.defs and config.h
except for there are no makefiles generated. the rules
can be found in build/Makefile.rules

the build tree has the same structure as the source tree, and contains 
the makefiles to build from source dir to build dir. if you need multiple
build trees, just copy a clean tree an rerun configure from the empty
template.

plugins and tools are built seperately from libpf in a second pass,
after libpf is installed. the plugins are self-configuring, in a sense
that they try to build anyway, and when fail will not install without
scaring everyone with error messages.

the entire build's error output will be logged in the file build/build.log
or the file build.log in the build dir. the most important reason for this
is bugreports. bin/watchlog will make build/build.log into a fifo and will 
continuously read from it. this process can be run in an emacs *compilation*
buffer.