Breaking out the concept of a tracking counter from the LLI
Breaking out the concept of a tracking counter from the LLI

git-svn-id: 6625e4d6743179724b113c04fbf297d122273a36@1378 108fab2b-820f-0410-9f2c-e5cc2c41d7be

ianmartin/GPSTk,ianmartin/GPSTk,ianmartin/GPSTk,ianmartin/GPSTk,ianmartin/GPSTk,ianmartin/GPSTk