Rename FPID to LIB_ID as is now used as a generic library identifier and
is no longer specific to footprints.
Remove all mention of footprint from the new LIB_ID doxygen comments and
code.
Rename files fpid.h and fpid.cpp to lib_id.h and lib_id.cpp.
Rename fp_lib_table.keywords file to lib_table.keywords and adjust CMake
build dependencies accordingly.
Update all source files effected by the code and file name changes.
Update .gitignore for file name changes.
Create SYM_LIB_TABLE and SYMBOL_LIB_TABLE_ROW objects derived from LIB_TABLE
and LIB_TABLE_ROW respectively for supporting symbol library tables.
Add FPID member to LIB_PART for associating a symbol to a specific library
nickname. Please note, this is not used in any way at this time and will be
implemented when the symbol library table is actually implemented.
Add sym_lib_table keyword to keywords file. This is a temporary measure
until a more elegant method for parsing and formatting library tables can
be implemented.
Build FPID support in the common library instead of the pcbcommon library
for use in Eeschema.