FEAT: updated travis script not to depend on r3 from rebol.com

Author: Oldes

.travis.yml

@@ -33,13 +33,9 @@ install:
     # libc6-dbg:i386:
     #   For running valgrind on a 32b subject-under-test on a 64b host.
     - sudo apt-get install -y gcc-multilib valgrind libc6:i386 libc6-dbg:i386
-    # Fetch a Rebol bootstrap binary, which is needed for building Rebol.
-    - wget http://www.rebol.com/r3/downloads/r3-a111-4-2.tar.gz
-    - tar xvzf r3-a111-4-2.tar.gz
-    - cp r3 make/r3-make
 
 script:
     - cd make/
-    - make make OS_ID=${OS_ID}
+    - prebuild/r3-make-linux -qs ../src/tools/make-make.r ${OS_ID}
     - make clean prep r3
     - valgrind --error-exitcode=42 --leak-check=full ./r3 --do 'print {Hello!}'