add extra apply_macros and apply stuff; fix unexisting definitions.
add forall/2 and ignore/1 to system stuff.
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@2237 b08c6af1-5177-4d33-ba66-4b1c6b8b522a
a:(a(X),b(X)) should be the same as a:a(X), a:b(X). Use PushModPred to
force that.
git-svn-id: https://yap.svn.sf.net/svnroot/yap/trunk@642 b08c6af1-5177-4d33-ba66-4b1c6b8b522a