The process of parsing command-line options in commands that perform
an early scan over their arguments has been unified using a new
early-scan sub-API. The 'git fast-import' command has been converted
to use this API, safely parsing and skipping known options taking
separate values to prevent logic bugs.
* cc/early-scan-options:
fast-import: use early_scan_options() for --allow-unsafe-features
parse-options: add early_scan_options()
parse-options: extract lookup_long_opt() from parse_long_opt()
parse-options: add parse_options_takes_argument()
Junio C Hamano
119adcb4d2