- prevent buffer overflow issues.
- change kill_user log from VIOLATION to SECURITY.
- refine board_config display (prevent garbage restriction display)
- (internal) drop deprecated old OS support. focus on modern Linux/FreeBSD now.
- board_config: many people get confused about "one month", let's display "30 days" instead.
- (internal) directory layout structure finetune
- (internal) moving more bbs-independent code to utility library.
- (internal) util update - sync with latest library
- (internal) move osdep to libbbsutil
(internal) refine directory layout: libbbs/libbbsutil -> common/bbs,sys.
(internal) drop src directory (moved to common/ now)
 - fix syntax for old c compiler.
 - code clean up
 - enlarge buffer size to prevent overflow
- (internal) move UTIL_C API from mbbsd/stuff to cmbbs.
- register: (exp) complete testing code for regform 2: now enables testing from user input to whole adm process
- bnote: change board_note display settings to make it more meaningful.
- change the chinese description of b_note and message finetune.
- make regform2 complete by upgrading scripts.
- fix compile error for regform1
- expiring user after board set to hidden state.