renamed tile_sort() to int_sort()
new program error_analysis, runs mpileup and analyses each genomic location
dropped #define for error structure analysis
dropped N_TILES, tile array/hash now built dynamically
dropped spatial_filter
added tileviz option to generate pngs
replaced separate tile/cycle region hashes by equal size arrays which grow dynamically
added a resize region function if the initial region size/read density is too low
fix for precise and samtools version format change
added error_analysis/Makefile.am
fix bug in samtools include file location
fixed bug in location of deletion
fixed generation of tileviz images, dropped original quality
use a single hash to track regions, all tiles/reads/cycles now use a fixed size region array
use multiple regions to set state if coverage is too low
Merge pull request #79 from srl147/devel

Devel
Merge remote-tracking branch 'origin/devel' into sp2

Conflicts:
	src/Makefile.am
	src/ac_stubs/ax_lib_samtools.m4
	src/configure.ac
	src/spatial_filter/spatial_filter.c
Tidy up sp filter II labelling

Tidy up sp filter II's labelling so that next_label is held within the data structure rather than outside.