belive: Avoid duplicate map lookups when calculating the liveness of a node in a block.
belive: Directly pass the flags to set to live_end_at_block() instead of passing a bool.
belive: Remove the visited bitset for liveness calculation.

Simply check, whether any liveness bits were set before.
scripts: Fix some whitespace nits.
scripts: Generate accessor functions for nodes with a variable/dynamic number of inputs.
tv: Remove add_table[][][] and simply use +.
tv: Remove mul_table[][][] and simply use * and <<.
irdump: Remove the parameter bad from get_mode_name_ex().

All callers pass in a null pointer.
upgrade Doxyfile to latest doxygen version
small docu cleanups
remove nearly unused loop_flags
remove more unused loop fields
remove unnecessary declaration
always enable NO_CFLOOP_WITHOUT_HEAD
remove more unused loop stuff
remove unused support for max_loop_depth
reenable femms
remove commented out code
further cleanup in loop code
remove #if 1