Add the projections directory to the scons build
Merge pull request #239 from khogenso/devel

Add the projections directory to the scons build
Merge branch 'devel' of https://github.com/asfadmin/ASF_MapReady into devel
Fixes DE1397. Assign MAPREADY_VERSION_STRING in the SConstruct, and optionally via the scons command line. Also change the RPM spec file to pass the version via command line.