igc-19.12.1681

Fixed Issues

#73 libopencl_clang.so doesn't exist
#75 undefined symbols in libigc libigdfcl
#79 drop DATE from iga_version_string
#80 Align API version and package version

igc_release_2019-03-12

Fixed issues

#73 Fixed common_clang name
#35 Clean up installation targets