installed_progs.t: Check for 19 more programs

9114e6d0-44a5-11e4-8c28-c80aa9e67bbd
installed_progs.t: Remove colordiff, it hangs on Debian 7.6

bd5b6326-44ab-11e4-a1e4-fefdb24f8e10
installed_progs.t: Remove flac description

64bc8b02-44ae-11e4-97ea-c80aa9e67bbd