Added octal formatting fo `fmt` functions. (#5867)

* Added octal formatting (specifier "o") to `formatIntValue` function.
* Added octal specifier test case in `fmt.zig` (under the "int.specifier" case)
03f14c3102~nue committed on 7/14/2020, 6:27:58 AM· committed by GitHubparentbc900cd
1 file changedLine totals unavailable