bug 900330 - part 0 clean up xpcom/typelib/xpt/src/Makefile.in r=ted

we don't need to build the C xpt code before idl parsing anymore so change to
 compile it during libs
bug 900330 - part 1 rm xpcom/typelib/xpidl/ r=ted
bug 900330 - generate the xpidl parser during precompile instead of export r=ted