This does:
 - fix one warning in bootflag.c
 - change a few longs to int and int to long in the MTRR driver
   to make it 64bit clean (should be a NOP for 32bit i386, but is needed
   for x86-64)
 - Convert the MTRR /proc interface to seq_file and remove the broken
   compute_ascii() hack.  This fixes some broken code e.g.  the old
   mtrr_write was completely broken because the loop checking for
   commands started with a "continue" - remove duplicated mtrr type
   strings.