bc-gh: update to 1.2.6
bc-gh: update to 1.2.6

This release contains more locales, removes dependence on the non-POSIX
`local` in shell scripts, updates the dc man page to fix a small
omission, and fixes a rare and subtle use-after-free bug in dc.

necrophcodr/void-packages,necrophcodr/void-packages,necrophcodr/void-packages,necrophcodr/void-packages,necrophcodr/void-packages