use UPX to compress the GNU/Linux binary as well

.travis.yml

@@ -15,12 +15,12 @@ matrix:
             packages:
             - libsdl2-dev
             - libfltk1.3-dev
-            - gzip
+            - upx-ucl
         script:
           - cd unix
           - make
-          - gzip sdlpal
-          - mv sdlpal.gz ../deploy/sdlpal-linux.gz
+          - upx --best --lzma sdlpal
+          - mv sdlpal ../deploy/sdlpal-linux
           - make clean
           - make check
           - cd ..
@@ -49,8 +49,8 @@ matrix:
           - make HOST=i686-w64-mingw32-
           - i686-w64-mingw32-strip -s sdlpal.exe
           - upx --best --lzma sdlpal.exe
-          - zip sdlpal-mingw32.zip sdlpal.exe
-          - mv sdlpal-mingw32.zip ../deploy/
+          - zip sdlpal-win32-mingw.zip sdlpal.exe
+          - mv sdlpal-win32-mingw.zip ../deploy/
           - cd ..
 
       - os: linux