style fixes in CD-HIT v4.6.1 easyconfig file
fix filename of CD-HIT easyconfig w.r.t. versionsuffix
pass down compiler + flags, enable OpenMP in CD-HIT easyconfigs, add ictce 5.5.0 easyconfig for v4.6.1
include $CPPFLAGS in compiler flags being passed down
use $CXX since CD-HIT is C++
Merge pull request #5 from boegel/CD-HIT

pass down compiler flags, style fixes, add ictce easyconfig