Revert "Refactor out the lexers token processors"

As object/array literals prevent functions from being inlined in v8 this
commit decreased performance by ~10%. There's really no readability loss
by reverting, simply a bit more LOC.

Once https://github.com/v8/v8/blob/master/src/ast.cc#L1069 gets fixed we
should revisit this. Currently objects CAN get inlined in newer versions
of v8, but the commit is still not in node v0.8.1

This reverts commit f8b3dd5012cdc20ce1e32ecea12375d61467c0ae.

Conflicts:

	lib/luaparse.js