made erlang binding work with system *installed* dyncall: - made build use static libraries (used .o files directly) - removed custom flags for include path and relying on CFLAGS now - change cc to $(CC) - readme update with build instructions, etc.

# TODO:
#  - how to handle C files? such as intutils.cpp and ldynguess.c
TOP=..
SRCS="typesignature.lua array.lua dynload.lua dyncall.lua dynport.lua path.lua"
luadoc -d "${TOP}/doc" ${SRCS}