- specifying $(includedir) to AM_CPPFLAGS caused problems when --prefix was set to /usr during cross-compliation since header files for the cross compiler conflicted with files in $(includedir)=/usr/include.
- the same applies to $(libdir) in LDFLAGS or something similar
deleted qse_awk_getoption()/qse_awk_setoption()/qse_awk_setmaxdepth()/qse_awk_getmaxdepth().
redefined enumeration types related to the functions added or deleted above.
moved fnc_sleep from cmd/awk/awk.c to mod/awk/sys.c
managed to get external module call working in the primitive level
