Bug 26083

	Recently, following a commit to src/release/scripts/doFS.sh,
	a comment was made that the Alpha install disk is almost
	overflowing.  In the i386 case, the install disk can be squeezed
	by reducing the code over-alignment generated by gcc.  This
	feature isn't available on gcc/Alpha where the code alignment
	is hard-coded.

	Attached are some patches to implement -malign-jumps=N,
	-malign-loops=N and -malign-functions=N as for the i386.
	Implementing all this functionality is overkill for the
	release disk situation, but is consistent with the i386 and
	mostly consistent with the SPARC (alignments are specified
	in bytes on the SPARC, but log[base2](bytes) on the i386
	and in the patches below).

	I have successfully build and run a kernel with options
	"-malign-jumps=2 -malign-loops=2 -malign-functions=2" and
	completed a buildworld with options
	"-malign-jumps=3 -malign-loops=3 -malign-functions=4".

Fix: The following patches are against the following pre-release
	versions, rather than the just-committed 2.95.3 release.
How-To-Repeat: 
	Build a kernel with the standard gcc and with gcc containing
	the patches below.  Use "cmp -l" to show that they are the same
	other than the build-time and version number.

	I found that the kernel text segment shrank by 10% when compiled
	with "-malign-jumps=2 -malign-loops=2 -malign-functions=2".