[PATCH v3 0/4] Some small fixes to glossary-content.txt

This is another reroll of my patches for glossary-content.txt.

- The first patch is the same as in v2.
- The second patch only adds the log message which Junio suggested and a missing full stop.
- The third patch is new and is a direct consequence of the second patch.
- In the fourth patch there is an explanation in the log message why the exact definition of 
  "refspec" can be omitted in the glossary. The definition of "pathspec" is kept in the glossary; 
  there are only small improvements to wording and formatting.

[PATCH v3 1/4] glossary: remove outdated/misleading/irrelevant entries [PATCH v3 2/4] glossary: improve description of SHA-1 related topics [PATCH v3 3/4] The name of the hash function is "SHA-1", not "SHA1" [PATCH v3 4/4] glossary: improve definitions of refspec and pathspec

--- Thomas