We need a new name for the overall mapmaking flags

[chervias]

So far we have followed the ACT convention, where the flags are called glitch_flags. However, now we have a glitch-finding function that add flags named glitches, which are obviously different from the overall flags, but could lead to a conflict of names.
With overall flags for mapmaking I mean the union of turnarounds, glitches, jumps, bad subscans, etc.

[mhasself]

The plan here has always been to combine various flags into two aggregate flags that mapmaking would treat slightly separately:

• do_not_map -- data that are not completely invalid, but where there is some desire to exclude them from the map. For example, turn-arounds regions can usually be included, without any patching, when doing fourier filtering. But the samples themselves should be excluded from mapmaking. Or if there are a few places where the pointing is uncertain, but the signal otherwise well behaved.
• invalid_signal -- data that cannot be trusted (such as glitches); these need to be gap-filled before fourier operations, and thus the samples excluded from mapmaking.

I'm open to better name suggestions here I just want to encourage a focus on how the aggregate flags will be used downstream, rather than what goes into them. (So I am quite happy to lose the "glitch_flags" hard code from the mapmakers...)
There might be