Consider adding functionality to set date and time elements from ctime string

[joachimmetz]

Context from log2timeline-dev@

I wrote a simple script that exploits regexes to convert from a standard asctime format to a string that can be accepted from dfdatetime CopyFromDateTimeString https://gist.github.com/SamuelePilleri/3ffae24b3cdd6dd04d01790519c2846b

Consider adding functionality to set date and time elements from ctime string

[SamuelePilleri]

@stefanomart

[joachimmetz]

HTTP headers in Java idx format uses ctime string format

[joachimmetz]

English day of week and month abbreviations: https://www.gnu.org/software/libc/manual/html_node/Formatting-Calendar-Time.html

The locale definitions for English https://github.com/lattera/glibc/blob/master/locale/C-time.c