Revert "mpris: rename frombool() to str2bool()"
Revert "mpris: rename frombool() to str2bool()"

This reverts commit 2ad01371a23e056c1103142ad19e1bb839818485.

Normal `say` returns 1 on success, 0 on failure; it's what I was trying
to avoid in the first place.

grawity/hacks,grawity/hacks,grawity/hacks,grawity/hacks,grawity/hacks,grawity/hacks,grawity/hacks