Comment 40 for bug 124987

This patch:
1) Replaces artifical 3-letter weekday abbreviations with 2-letter, without trailing dots. Such abbreviations are intended for calendar headings, so have no dots.
2) Adds geninitive, lowercase month names as alternative digits (for use with %Om sprintf specificator).

Please commit it immediately, such bugs should not be unattended for 3 years.