For CI - enable LuaJIT for Android build.

At the same time CI test passing multiple custom properties when invoking Gradle build system.
Workaround STATIC build config running out of disk space problem by not building Urho3D samples.
[cache clear]

.travis.yml

@@ -318,14 +318,13 @@ env:
     - CCACHE_COMPRESS=1
     - CCACHE_MAXSIZE=100M
   matrix:
-    # Travis CI VM does not has enough disk space to build the STATIC lib type
-    # ORG_GRADLE_PROJECT_abi=x86 ORG_GRADLE_PROJECT_URHO3D_LIB_TYPE=STATIC SYS_IMG=android-28 PLATFORM=android-17
+    - ORG_GRADLE_PROJECT_abi=x86 ORG_GRADLE_PROJECT_URHO3D_LIB_TYPE=STATIC SYS_IMG=android-28 PLATFORM=android-17
     - ORG_GRADLE_PROJECT_abi=x86 ORG_GRADLE_PROJECT_URHO3D_LIB_TYPE=SHARED SYS_IMG=android-28 PLATFORM=android-17
-    # ORG_GRADLE_PROJECT_abi=x86_64 ORG_GRADLE_PROJECT_URHO3D_LIB_TYPE=STATIC SYS_IMG=android-28 PLATFORM=android-21
+    - ORG_GRADLE_PROJECT_abi=x86_64 ORG_GRADLE_PROJECT_URHO3D_LIB_TYPE=STATIC SYS_IMG=android-28 PLATFORM=android-21
     - ORG_GRADLE_PROJECT_abi=x86_64 ORG_GRADLE_PROJECT_URHO3D_LIB_TYPE=SHARED SYS_IMG=android-28 PLATFORM=android-21
-    # ORG_GRADLE_PROJECT_abi=armeabi-v7a ORG_GRADLE_PROJECT_URHO3D_LIB_TYPE=STATIC SYS_IMG=android-25 PLATFORM=android-17
+    - ORG_GRADLE_PROJECT_abi=armeabi-v7a ORG_GRADLE_PROJECT_URHO3D_LIB_TYPE=STATIC SYS_IMG=android-25 PLATFORM=android-17
     - ORG_GRADLE_PROJECT_abi=armeabi-v7a ORG_GRADLE_PROJECT_URHO3D_LIB_TYPE=SHARED SYS_IMG=android-25 PLATFORM=android-17
-    # ORG_GRADLE_PROJECT_abi=arm64-v8a ORG_GRADLE_PROJECT_URHO3D_LIB_TYPE=STATIC SYS_IMG=android-25 PLATFORM=android-21
+    - ORG_GRADLE_PROJECT_abi=arm64-v8a ORG_GRADLE_PROJECT_URHO3D_LIB_TYPE=STATIC SYS_IMG=android-25 PLATFORM=android-21
     - ORG_GRADLE_PROJECT_abi=arm64-v8a ORG_GRADLE_PROJECT_URHO3D_LIB_TYPE=SHARED SYS_IMG=android-25 PLATFORM=android-21
 stage: split ABI build configuration
 before_script:
@@ -336,8 +335,9 @@ before_script:
   - if [[ $RELEASE_TAG ]] || (! [[ $TRAVIS_BRANCH =~ [^-]+-[^-]+-CI ]] && echo $COMMIT_MESSAGE |grep -cq '\[ci package\]'); then export PACKAGE_UPLOAD=1; fi
   - touch $HOME/.android/repositories.cfg && (while :; do echo 'y'; sleep 1; done) |sdkmanager 'tools' 'platform-tools' 'build-tools;28.0.1' "platforms;$PLATFORM" 'ndk-bundle' 'cmake;3.6.4111459' "system-images;$SYS_IMG;google_apis;$ORG_GRADLE_PROJECT_abi"
   - export PATH=$(whereis -b ccache |grep -o '\S*lib\S*'):$PATH ANDROID_CCACHE=$(which ccache)
+  - if [[ "$ORG_GRADLE_PROJECT_URHO3D_LIB_TYPE" == "STATIC" ]]; then export EXTRA_PROPS='-P URHO3D_SAMPLES=0'; fi
   - rake ci_setup_cache
-script: ./gradlew build && if [[ $PACKAGE_UPLOAD ]]; then rake ci_package_upload; fi && rake ci_timer
+script: ./gradlew -P URHO3D_LUAJIT=1 -P URHO3D_LUAJIT_AMALG=1 $EXTRA_PROPS build && if [[ $PACKAGE_UPLOAD ]]; then rake ci_package_upload; fi && rake ci_timer
 after_script: rake ci_teardown_cache
 matrix:
   fast_finish: true