utils/tp_luks_functions: be more verbose
utils/bin/iopl,ioperm: use syscall(2) directly
run.bash: import all env variables from the make system
rules.mk: export TOPDIR for run.bash
utils/envcheck: conditional color of check name/result
utils/envcheck: support forcing color support
misc: use global CFLAGS, fix discovered compile errors
misc: don't use global LDLIBS, use per-target specification