ffmbc: remove commented-out code
when: use debian tarball to simplify formula
ace: use make -C
acme: use make -C
anttweakbar: use make -C
bbcp: use make -C
box2d: no need to chdir twice
cadaver: use make -C
clasp: use make -C
cmigemo: use make -C
convertlit: use make -C
dmd: use make -C
echoprint-codegen: use make -C
halibut: use make -C
kvazaar: use make -C
libebml: use make -C
libmatroska: use make -C
lmdb: use make -C
ophcrack: use make -C
tpl: use make -C