Update to 2.6.0. Port changes:
- add LICENSE (GPLv2)
- convert to new options framework
- make NLS optional
- add MYSQL option to build MySQL database support
- remove LENSFUN option (graphics/lensfun is now required)
- remove MARBLE option (libkgeomap provides this and is required)
- remove no longer needed patches
Submitted by: Jason E. Hale <bsdkaffee at gmail.com> via area51 commit