[PATCH v1 0/7 SECTOR: Support aligning to flash sector boundary

[binutils@emagii.com]

Patchset 1

Introduce the BANK command which allows
the user to define flash sector boundaries.

I.E:

BANK (bankname) {
  SECTOR ("32 KB");
  SECTOR ("32 KB");
  SECTOR ("64 KB");
  SECTOR ("64 KB");
  SECTOR ("64 KB");
}

This can be used later to align a sector to the flash boundary using the 

ALIGN_SECTOR command in an output sector.

A user who want to use their own tool to create the
a checksum, maybe using a SHA algorithm need a
simple way to understand the limits of the area
to calculate the digest on.
By aligning to a flash sector, this is much simplified.

When writing a new image to the flash, you first have
to erase the flash sector, so it is practical
to align stuff to flash sector boundaries.

[PATCH v1 1/7] SECTOR: NEWS
[PATCH v1 2/7] SECTOR: ld.texi
[PATCH v1 3/7] SECTOR: ldlex.l
[PATCH v1 4/7] SECTOR: ldgram.y
[PATCH v1 5/7] SECTOR: language additions
[PATCH v1 6/7] SECTOR: add testsuite
[PATCH v1 7/7] SECTOR: Makefile.*