Log Message:
Convert to buildlink3.
com_err: add TODO entry -- installed file contains references to build dir.
libuuid: add patch so that binary finds shlibs.
e2fsprogs: many fixes to make compile on NetBSD; compile_et doesn't like
--build-dir (because that changes path to point to com_err's build dir);
add dependency on gettext since the .po files use msginit; add missing
program and locale files to PLIST (also there on Linux?).

Use COMPILE_DIRS and INSTALL_TARGETS et al. instead of adding post-* or
do-* targets.