travis: use debug for one build

For the all-off build, enable the wallet and debug. This ensures that debug
options will catch wallet problems as well.

In order to make sure the no-wallet path is still tested, disable the wallet
in the other x86_64 build.

.travis.yml

@@ -27,9 +27,9 @@ matrix:
     - compiler: "true 1"
       env: HOST=arm-linux-gnueabihf PACKAGES="g++-arm-linux-gnueabihf" DEP_OPTS="NO_QT=1" GOAL="install" BITCOIN_CONFIG="--enable-glibc-back-compat"
     - compiler: "true 2"
-      env: HOST=x86_64-unknown-linux-gnu DEP_OPTS="NO_QT=1 NO_WALLET=1 NO_UPNP=1" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-glibc-back-compat CPPFLAGS=-DDEBUG_LOCKORDER"
+      env: HOST=x86_64-unknown-linux-gnu DEP_OPTS="NO_QT=1 NO_UPNP=1 DEBUG=1" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-glibc-back-compat CPPFLAGS=-DDEBUG_LOCKORDER"
     - compiler: "true 3"
-      env: HOST=x86_64-unknown-linux-gnu RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-glibc-back-compat"
+      env: HOST=x86_64-unknown-linux-gnu DEP_OPTS="NO_WALLET=1" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-glibc-back-compat"
     - compiler: "true 4"
       env: HOST=i686-pc-linux-gnu PACKAGES="g++-multilib" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-glibc-back-compat"
     - compiler: "true 5"