added cpack component identifications to all install targets Tokutek/mongo#869

Conflicts:
	cmake_modules/TokuThirdParty.cmake
silenced tokudb.data warning if being built as a component Tokutek/mongo#869
fixed some invalid parameter passing discovered by clang Tokutek/mongo#869

TXNID_NONE is not the same as (TOKUTXN) 0
removed strict valgrind requirement #122 Tokutek/mongo#869

fixes #122