Add path src/ to source path in build.properties

This fixes the warning "src/ is missing from source.."

Change-Id: I166e3a6a3d5230e4110d3283ec4dbc7d1dfe6732
Signed-off-by: Matthias Sohn <matthias.sohn@sap.com>

org.eclipse.jgit.http.test/build.properties

@@ -1,4 +1,5 @@
-source.. = tst/
+source.. = tst/,\
+           src/
 output.. = bin/
 bin.includes = META-INF/,\
                .,\

org.eclipse.jgit.test/build.properties

@@ -1,6 +1,7 @@
 source.. = tst/,\
            tst-rsrc/,\
-           exttst/
+           exttst/,\
+           src/
 bin.includes = META-INF/,\
                .,\
                plugin.properties