upgrade to EPSG 8.0
replacement of geodesic engine with one from Charles Karney (#197)
replacement of geodesic engine with one from Charles Karney (#197)
apply fix for src/makefile.vc missing object (#200) as provided to email list by Joaquim
recover gracefully if setlocale() returns NULL like on Android (#204)
update with autogen.sh
Major upgrade to geodesic support from Charles Karney (#197). 
Syncs geodesic routines with GeographicLib.  Adds geodesic.3 man page. 
geod_* api exposed publically.  geodesic.h is installed.
Added missing geodesic.3
rename and hide sign() function
ensure core mutex created in recursive mode, forces use of -lpthread
refresh from configure.in
fix unused variable warnings in healpix
use PTHREAD_MUTEX_RECURSIVE_NP on pre-unix98 systems instead of PTHREAD_MUTEX_RECURSIVE
preliminary step implementing virtual fileio
bulk of file api implementation complete and working
reformat, add braces to avoid warnings
add pj_ctx_fgets() implementation (untested)
upgrade to the new file api
avoid warning about pj_init_lock not being implemented
prepare for 4.9.0 beta release