Let the healing begin by unbreaking. The main thing was to set DBEGIN to
0 as seems to happen with the upcoming version 2.6.8 (not released yet).
Add minor patches to ensure clean build with `-Wall -Werror',
proper definition of HZ, etc.
Instead of explicitly specifying LIB_DEPENDS, convert to USE_TK. Leave the
TCL_VER at 8.4 for now.
Gentoo builds theirs for various platforms -- not just i386 -- so that would
be the next step.