[infer][java] Infer now reports errors with relative paths on Ant and Gradle projects

Summary:
Having the gradle integration reporting errors using relative paths is required to make Infer usable with CI tools

infer/bin/BuckAnalyze

@@ -67,8 +67,7 @@ def prepare_build(args):
     infer_options = [
         '--buck',
         '--incremental',
-        '--analyzer',
-        args.analyzer,
+        '--analyzer', args.analyzer,
     ]
 
     if args.debug:

infer/bin/inferlib.py

@@ -120,6 +120,11 @@ inferJ_group.add_argument('-pr', '--project_root',
                           help='Location of the project root '
                           '(default is current directory)')
 
+inferJ_group.add_argument('--absolute-paths',
+                          action='store_true',
+                          default=False,
+                          help='Report errors with absolute paths')
+
 inferJ_group.add_argument('--objc_ml_buckets',
                            dest='objc_ml_buckets',
                            help='memory leak buckets to be checked, '
@@ -411,8 +416,8 @@ class Infer:
 
         infer_cmd = [utils.get_cmd_in_bin_dir('InferJava')]
 
-        if self.args.buck:
-            infer_cmd += ['-project_root', os.getcwd()]
+        if not self.args.absolute_paths:
+            infer_cmd += ['-project_root', self.args.project_root]
 
         infer_cmd += [
             '-results_dir', self.args.infer_out,

infer/tests/codetoanalyze/java/checkers/BUCK

@@ -18,6 +18,7 @@ clean_cmd = ' '.join(['rm', '-rf', out])
 classpath = ':'.join([('$(classpath ' + path + ')') for path in dependencies])
 infer_cmd = ' '.join([
     'infer',
+    '--absolute-paths',
     '-o', out,
     '-a', 'checkers',
     '--',

infer/tests/codetoanalyze/java/eradicate/BUCK

@@ -24,6 +24,7 @@ classpath = ':'.join([('$(classpath ' + path + ')') for path in dependencies])
 env_cmd = ' '.join(['export', 'ERADICATE_RETURN_OVER_ANNOTATED=1'])
 infer_cmd = ' '.join([
     'infer',
+    '--absolute-paths',
     '-o', out,
     '-a', 'eradicate',
     '--',

infer/tests/codetoanalyze/java/infer/BUCK

@@ -23,6 +23,7 @@ def analysis_cmd(analyzer):
     classpath = ':'.join([('$(classpath ' + path + ')') for path in dependencies])
     infer_cmd = ' '.join([
         'infer',
+        '--absolute-paths',
         '--no-filtering',
         '-o', out,
         '-a', analyzer,

infer/tests/codetoanalyze/java/tracing/BUCK

@@ -18,6 +18,7 @@ clean_cmd = ' '.join(['rm', '-rf', out])
 classpath = ':'.join([('$(classpath ' + path + ')') for path in dependencies])
 infer_cmd = ' '.join([
     'infer',
+    '--absolute-paths',
     '-o', out,
     '-a', 'tracing',
     '--',