Replace tabs with spaces in gradle files.

build.gradle

@@ -54,11 +54,11 @@ apply from: "dependencies.gradle"
 
 ext.setupDefines = { project, binaries ->
     binaries.all {
-	if (project.hasProperty('debug')) {
-	    project.setupDebugDefines(cppCompiler, linker)
-	} else {
-	    project.setupReleaseDefines(cppCompiler, linker)
-	}
+        if (project.hasProperty('debug')) {
+            project.setupDebugDefines(cppCompiler, linker)
+        } else {
+            project.setupReleaseDefines(cppCompiler, linker)
+        }
         tasks.withType(CppCompile) {
             if (!project.hasProperty('compilerPrefix') && targetPlatform.architecture.name == 'arm-v7') {
                 project.addWpiUtilSharedLibraryLinks(it, linker, targetPlatform)

toolchains/arm.gradle

@@ -4,10 +4,10 @@ ext.buildPlatform = 'arm'
 def compilerPrefix = project.hasProperty('compilerPrefix') ? project.compilerPrefix : 'arm-frc-linux-gnueabi-'
 model {
     platforms {
-	arm {
-	    architecture 'arm'
-	    operatingSystem 'linux'
-	}
+        arm {
+            architecture 'arm'
+            operatingSystem 'linux'
+        }
     }
     toolChains {
         gcc(Gcc) {

toolchains/native.gradle

@@ -15,11 +15,11 @@ if (OperatingSystem.current().isLinux()) {
 
 model {
     platforms {
-	x86 {
-	    architecture 'x86'
-	}
-	x64 {
-	    architecture 'x86_64'
-	}
+        x86 {
+            architecture 'x86'
+        }
+        x64 {
+            architecture 'x86_64'
+        }
     }
 }