Upgrade buck to 7b7817c48f

Upgrade to match the version used on Gerrit's master branch.

Requires a couple of modifications to make the tests work:

- Remove source_under_test parameters from java_test calls.

- Add vm_args with explicit setting of tmpdir location for http
  tests. This is needed due to upstream changes in temporary
  directory handling [1].

[1] https://github.com/facebook/buck/issues/946

Change-Id: I5d5dd5edc335d44b118e8587f69ba89b83fc7fbb
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

.buckversion

@@ -1 +1 @@
-e64a2e2ada022f81e42be750b774024469551398
+7b7817c48f30687781040b2b82ac9218d5c4eaa4

org.eclipse.jgit.http.test/BUCK

@@ -25,7 +25,7 @@ for t in TESTS:
       '//lib/jetty:util',
       '//lib:commons-logging',
     ],
-    source_under_test = ['//org.eclipse.jgit.http.server:jgit-servlet'],
+    vm_args = ['-Djava.io.tmpdir=buck-out'],
   )
 
 java_library(

org.eclipse.jgit.lfs.server.test/BUCK

@@ -30,6 +30,5 @@ for t in TESTS:
       '//lib:servlet-api',
       '//lib:commons-logging',
     ],
-    source_under_test = ['//org.eclipse.jgit.lfs.server:jgit-lfs-server'],
     vm_args = ['-Xmx256m', '-Dfile.encoding=UTF-8'],
   )

org.eclipse.jgit.lfs.test/BUCK

@@ -15,7 +15,6 @@ for t in TESTS:
       '//lib:hamcrest-library',
       '//lib:junit',
     ],
-    source_under_test = ['//org.eclipse.jgit.lfs:jgit-lfs'],
   )
 
 java_library(

org.eclipse.jgit.pgm.test/BUCK

@@ -21,7 +21,6 @@ for t in TESTS:
       '//lib:commons-compress',
       '//lib:tukaani-xz',
     ],
-    source_under_test = ['//org.eclipse.jgit.pgm:pgm'],
     vm_args = ['-Xmx256m', '-Dfile.encoding=UTF-8'],
   )
 

org.eclipse.jgit.test/BUCK

@@ -68,7 +68,6 @@ for src in TESTS:
       '//lib:slf4j-api',
       '//lib:slf4j-simple',
     ] + DEPS.get(src, []),
-    source_under_test = ['//org.eclipse.jgit:jgit'],
     vm_args = ['-Xmx256m', '-Dfile.encoding=UTF-8'],
   )