There are missing field assignements, and/or messsages being re-used
without re-initializations, which allows for fields to be implicitly
forwarded.
This prevents me from creating per request message types, as I can't
spend currently any more time debugging this issue.
* Also change _orig to _intr for clarity
* Cleaned up {IPC,KER}VEC
* Renamed _minix_kernel_info_struct to get_minix_kerninfo
* Merged _senda.S into _ipc.S
* Moved into separate files get_minix_kerninfo and _do_kernel_call
* Adapted do_kernel_call to follow same _ convention as ipc functions
* Drop patches in libc/net/send.c and libc/include/namespace.h
Change-Id: If4ea21ecb65435170d7d87de6c826328e84c18d0
