updated for version 7.4.075
Problem:    Locally setting 'undolevels' is not tested.
Solution:   Add a test. (Christian Brabandt)
Added tag v7-4-075 for changeset 829aa8c8449d
updated for version 7.4.076
Problem:    "cgn" does not wrap around the end of the file. (Dimitrov
	    Dimitrov)
Solution:   Restore 'wrapscan' earlier. (Christian Brabandt)
Added tag v7-4-076 for changeset 8f0c264db1e7
updated for version 7.4.077
Problem:    DOS installer creates shortcut without a path, resulting in the
	    current directory to be C:\Windows\system32.
Solution:   Use environment variables.
Added tag v7-4-077 for changeset 53bc55e58fef