Move to /usr prefix.

- This is much more standard and replaces /image in sysa and is the
  standard in sysc (avoids many issues).
- GCC needs to have a file created for some unknown reason.
- Checksums updated.

sysa/gcc-4.0.4/pass1.sh

@@ -3,11 +3,6 @@
 
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-src_unpack() {
-    default
-    tar xzf ${SOURCES}/automake-1.16.3/src/automake-1.16.3.tar.gz
-}
-
 src_prepare() {
     default
     # This is needed for building with TCC