Removing CSU patches

* Removed startup code patches in lib/csu regarding kernel to userland
   ABI.

 * Aligned stack layout on NetBSD stack layout.

 * Generate valid stack pointers instead of offsets by taking into account
   _minix_kerninfo->kinfo->user_sp.

 * Refactored stack generation, by moving part of execve in two
   functions {minix_stack_params(), minix_stack_fill()} and using them
   in execve(), rs and vm.

 * Changed load offset of rtld (ld.so) to:
      execi.args.stack_high - execi.args.stack_size - 0xa00000
   which is 10MB below the main executable stack.

Change-Id: I839daf3de43321cded44105634102d419cb36cec

test/Makefile

@@ -61,12 +61,6 @@ MINIX_TESTS+= \
    62
 .endif #  ${MACHINE_ARCH} == "i386"
 
-.if ${MACHINE_ARCH} == "earm"
-# LSC Not yet supported on ARM
-MKPIC:=		no
-LDSTATIC:=	-static
-.endif
-
 .for t in ${MINIX_TESTS}
 PROGS+= test${t}
 .endfor