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
don't fail configure if lua is there but libs are missing
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.
Fork not supported on MinGW.
Added additional logic to properly detect mingw. More udpates for supporting custom protobuf-c paths. Mthread support detection updates.
MinGW also requires GEOS_INLINE.
Updates to support custom protobuf-c paths on mingw. Old logic was self sabotaging itself by resetting includes to nothing when the inc/lib specific flags were specified to configure.
Not sure why __MINGW_H macro is used. __MINGW32__ or __MINGW__ are the standard widely used macros. I couldn't get osm2psql to build with the _H macro. I went forward using _MINGW32__, which is what you see in most open source ports to this platform.