Merge pull request #2 from baritone/elphel-proj

Elphel proj
Comment correction from pull-request
README update and doxygen main page adaptation
Documentation images directory modification
Removing previous documentation images directory
Documentation images directory for beta 0.2 segment
libinter sub-module update to release v0.2
Update makefile for build target to avoid sub-modules recompilation
Adding equirectangular tile gnomonic reprojection with arbitrary focal
Doxygen documentation
Conceptual discrepancy correction on focal length in lg_ttg_ff
Function lg_ttg_ff reformulation for futur library modification
Discrepancy in suffix correction and function naming in lg-ttg.c
Update libinter submodule
Setting libinter sub-module to release v0.2 (stable)
Correction in lg_ttg_focal for tiles that contain panorama boundary
update gnomonic projection with removal of EQR principal point
Merge branch 'master' of https://github.com/FoxelSA/libgnomonic into elphel-proj

Conflicts:
	src/gnomonic-ttg.c