Adds a new index format for files > 2GB. #348

Job	Run time
Linux_options (aec_off png_off jasper_off openjpeg_off, -DUSE_AEC=OFF -DUSE_PNG=OFF -DUSE_Jasper=...	45s
Linux_options (aec_on png_off jasper_off openjpeg_off, -DUSE_AEC=ON -DUSE_PNG=OFF -DUSE_Jasper=OF...	48s
Linux_options (aec_off png_on jasper_off openjpeg_off, -DUSE_AEC=OFF -DUSE_PNG=ON -DUSE_Jasper=O...	49s
Linux_options (aec_off png_off jasper_on openjpeg_off, -DUSE_AEC=OFF -DUSE_PNG=OFF -DUSE_Jasper=O...	50s
Linux_options (aec_off png_on jasper_on openjpeg_off, -DUSE_AEC=OFF -DUSE_PNG=ON -DUSE_Jasper=ON...	1m 10s
Linux_options (aec_on png_on jasper_on openjpeg_off, -DUSE_AEC=ON -DUSE_PNG=ON -DUSE_Jasper=ON ...	48s
Linux_options (aec_off png_off jasper_off openjpeg_on, -DUSE_AEC=OFF -DUSE_PNG=OFF -DUSE_Jasper=O...	47s
Linux_options (aec_on png_off jasper_off openjpeg_on, -DUSE_AEC=ON -DUSE_PNG=OFF -DUSE_Jasper=OFF...	47s
Linux_options (aec_off png_on jasper_off openjpeg_on, -DUSE_AEC=OFF -DUSE_PNG=ON -DUSE_Jasper=OF...	50s
Linux_options (aec_on png_on jasper_off openjpeg_on, -DUSE_AEC=ON -DUSE_PNG=ON -DUSE_Jasper=OFF ...	47s
Linux_options (aec_off png_off jasper_off openjpeg_on, -DUSE_AEC=OFF -DUSE_PNG=OFF -DUSE_Jasper=O...	52s
Linux_options (aec_on png_on jasper_off openjpeg_on, -DUSE_AEC=ON -DUSE_PNG=ON -DUSE_Jasper=OFF ...	50s
Linux_options (g2c, -DBUILD_G2C=ON -DPTHREADS=OFF -DLOGGING=ON -DJasper_ROOT=~/Jasper)	1m 1s
Linux_options (g2c_pthreads, -DBUILD_G2C=ON -DPTHREADS=ON -DLOGGING=ON -DJasper_ROOT=~/Jasper)	1m 16s
Linux_options (shared, -DBUILD_SHARED_LIBS=ON)	52s
	13m 12s

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