Adding missing code updates to mrf_insert and mrf util.
Renamed pyline to mrfgen.
#2 GIBS-384 Initial mrfgen modifications to handle SLD color maps
#2 GIBS-385 Initial SLD color map to VRT color table conversion tool.
Modified RGBApng2Palpng to allow SLD ColorMap as input.
#2 GIBS-384 Modified mrfgen to use RGBA2Palpng when conversion is needed
for custom color map.
#2 GIBS-384 ColorMap rename, temp file cleanup, and updated tiff
conversion support in mrfgen
#2 GIBS-385 Renamed sld2vrt to colormap2vrt
#2 GIBS-384 Updated mrfgen to use colormap2vrt and fixed temp tile
removal
#2 GIBS-385 Added support for GIBS colormap and zero value padding to
256 colors in colormap2vrt
#2 GIBS-386 Added support for GIBS colormap input in RGBApng2Palpng.
#2 GIBS-385 Made transparent color entry optional in colormap2vrt
#2 GIBS-384 Added check for default transparency option with color maps.
GIBS-353 Fixed tolerance resolution check in mrf_insert.
GIBS-358 Changed references to ColorMap from SLD with layer config tool.
#6 GIBS-354 Initial working incremental update using mrf_insert in
mrfgen script.
#3 GIBS-404 Modified layer config tool to use specified locations of
getCapabilities, getTileService, and Cache Configs instead of EndPoint
elements. Also added attribute in Projection for EPSG code to map to
working directories.
#3 GIBS-404 Updated layer config handling of layer metadata for
locations.
#3 GIBS-404 Removed need to specify MRF file locations and to store
header files, instead use relative paths to CacheLocation. Static and
year path layers are specified by FileNamePrefix attributes.
#3 GIBS-404 Minor improvements to layer config error handling and
compression type fix.