Signed-off-by: NNoel Power <noel.power@suse.com>

Changed the build command for the static library to include all objects
and added .PHONY for the targets that do not create files of the same
name.

Move $LDFLAGS to appear earlier, in case the user specifies a
position-sensitive flag.

Switch from always hiding the executed command to hide it only by
default, but let the user request that the commands be shown.  For now,
follow the convention that setting $V requests a verbose compilation.

LDSHFLAGS specifies -rpath, but is only used when LDFLAGS are specified,
and LDFLAGS also set the same -rpath.  Remove the redundant definition
in LDSHFLAGS.

The default definition from GNU make is more comprehensive.  Switch to
that, and allow an environmental override.

If the user has set a value for CC, AR, or RM, use that value.  GNU make
provides good defaults for all of these.

If the user has set CFLAGS, use that instead of -O2, but preserve the
other build options.

Append the local LDFLAGS to any value from the user.