Currently the include files for gdal are installed directly into /usr/include, but I'm now faced with a package (dev-db/mysql-workbench) that expects these include files to be in a gdal-specific directory, i.e. it contains #include <gdal/gdal.h> I have already discussed this with Aaron via email and we came to the conclusion that it is best to change this in the sci-libs/gdal package.
*gdal-1.11.1-r1 (05 Nov 2014) 05 Nov 2014; Aaron W. Swenson <titanofold@gentoo.org> -gdal-1.11.1.ebuild, +gdal-1.11.1-r1.ebuild: Fix bugs 361299 and 524052.