Log Message:
Update to 4.9.1

Note that this changes the shlib version from 0.8 to 9.0.  While
that's bizarre, upstream does not view it as a bug.
(Note that 4.9.0 had an RC but not an actual release.)

Changes from 4.8.0:

4.9.1 Release Notes
-------------------

 o 4.9.0RC2 release was abandoned because it was not promoted in a
   timely fashion. Subsequent maintenance of tickets has continued,
   and a new 4.9.1 release was issued in its place.

 o Implement inverse solution for Winkel Tripel from Drazan Tutic #250

 o More CMake configuration tweaks. The CMake configuration is probably
   not at feature parity with the autotools builds at this point but it
   is converging #256

 o Tweak initialization ordering around setlocal which may have caused
   issues #237

 o Support out-of-tree autoconf builds more completely #247

 o Fix NaN handling by geod_inverse and geod_polygon_addedge #251 & #253

 o Update config.sub and config.guess #257

 o Adapt Charles Karney's CMake patches for smoother build #258

 o Define default PROJ_LIB location for CMake compilation #261

 o Fix Windows compilation on PJ_aitoff.c

 o Align CMake SOVERSION with autotools #263

 o Regenerate nad/epsg with GDAL r28536 to avoid precision loss in TOWGS84
   parameters, e.g. on Amersfoort / RD EPSG:4289 (#260)

 o Add CMake project-config.cmake scripts (#264 from Charles Karney)

 o Dial back test sensitivity #255

4.9.0 Release Notes
-------------------

 o Implement CMake as an option for building PROJ.4

 o Implement new virtual file api (projFileAPI) so that all access to grid
   shift and init files can be hooked.

 o Replace geodesic implementation with one from Charles Karney and add a
   supported public interface (geodesic.h).

 o Upgraded to EPSG 8.5.

 o Removed old (deprecated) Java bindings in favor of the new api introduced
   in 4.8.0.

 o Implement the calcofi (Cal Coop Ocean Fish Invest Lines/Stations) projection

 o Install projects.h again for applications that want access to internal
   structures and functions despite the inherent fragility.

 o Various bug fixes and cleanup.

 o Added the CalCOFI pseudo-projection, #135