Switch to Num_Mimic in C version of Inverter
Switch to Num_Mimic in C version of Inverter

Simplifies the code and removes calls to Obj_To_[FI]64.

As a side effect, the C bindings don't accept Strings in a document's
Num field anymore.

rectang/lucy,kidaa/lucy,rectang/lucy,pombredanne/apache-lucy,apache/lucy,apache/lucy,rbevers/lucy,pombredanne/apache-lucy,kidaa/lucy,rbevers/lucy,rectang/lucy,nwellnhof/lucy,pombredanne/apache-lucy,pombredanne/apache-lucy,apache/lucy,apache/lucy,nwellnhof/lucy,nwellnhof/lucy,apache/lucy,rbevers/lucy,rectang/lucy,nwellnhof/lucy,rectang/lucy,kidaa/lucy,pombredanne/apache-lucy,rectang/lucy,nwellnhof/lucy,rbevers/lucy,pombredanne/apache-lucy,rbevers/lucy,apache/lucy,kidaa/lucy,kidaa/lucy,pombredanne/apache-lucy,nwellnhof/lucy,rbevers/lucy,kidaa/lucy,kidaa/lucy,apache/lucy,kidaa/lucy,rbevers/lucy,nwellnhof/lucy,rectang/lucy