Remove the old SVN Changelog

The last entry in it was from 2010
Remove dangling comment

Fixes #79
Add abandoned: tags to phstore list

The non-abandoned version of these tags are areas, so the abandoned
ones should be too.

Necessary for hotosm/HDM-CartoCSS#126.

Also defines area:highway as an area in default.style
Remove unused variables.
Comment out unused functions.

Commenting out is done using #if 0 ... #endif.
Declare tagtransform_shutdown in tagtransform.h.

It is used in output-pgsql.c.
Add necessary includes in tagtransform.c.
Avoid dangling else by adding braces.
Replace erroneous assignment with comparison.
Merge pull request #74 from pnorman/changelog

Remove the old SVN Changelog
Merge pull request #83 from pnorman/patch-1

Remove dangling comment
Merge pull request #86 from pnorman/abandoned

Add abandoned: tags to phstore list
Merge pull request #91 from RavuAlHemio/unwarn

fix some compiler warnings
Revert "Remove the old SVN Changelog"

Makefile.am appears to require a ChangeLog file to work correctly

This reverts commit 89e67cf468918f6dd53de0c20f0831de599efbcb.
Warn and exit if both -j and -k are passed as these are exclusive options

This is in response #93, but I have seen this mistake else where as well.
Increment version to 0.84 for release
Increment version to 0.85.0 to development version