Remove git ignore patterns for several revision-tracked files

Someone may have thought that we were ignoring these files, but we
aren't.  From what I can tell, for these specific files, revision
tracking is intentional.

.gitignore

@@ -36,8 +36,6 @@ com.ibm.wala.cast/lib/
 com.ibm.wala.core.testdata/*.jar
 com.ibm.wala.core.testdata/@dot/
 com.ibm.wala.core.testdata/lib/
-com.ibm.wala.core.testdata/ocaml/
-com.ibm.wala.core.tests/dat/wala.examples.properties
 com.ibm.wala.core.tests/report
 com.ibm.wala.core/@dot
 com.ibm.wala.core/com.ibm.wala.core*.jar
@@ -46,7 +44,6 @@ com.ibm.wala.dalvik.test/data/sample.cup
 com.ibm.wala.dalvik.test/parser.java
 com.ibm.wala.dalvik.test/report
 com.ibm.wala.dalvik.test/sym.java
-com.ibm.wala.dalvik/src/logback.xml
 com.ibm.wala.ide.jdt.test/testdata/
 edu.kit.wala.smali.test/out/
 results

com.ibm.wala.core.testdata/build.gradle

@@ -115,7 +115,10 @@ task generateHelloHashJar(type: JavaExec, dependsOn: unpackOcamlJava) {
 
 task cleanGenerateHelloHashJar(type: Delete) {
 	delete generateHelloHashJar
-	delete fileTree('ocaml') { exclude '*.ml' }
+	delete fileTree('ocaml') {
+		exclude '*.ml'
+		exclude '.gitignore'
+	}
 }
 
 clean.dependsOn cleanGenerateHelloHashJar

com.ibm.wala.core.testdata/classes/.gitignore

@@ -0,0 +1 @@
+!/*.class

com.ibm.wala.core.testdata/ocaml/.gitignore

@@ -0,0 +1,3 @@
+/hello_hash.cmi
+/hello_hash.cmj
+/hello_hash.jo