Bug 1319352 - Allow to run AccEventGen.py and xpild/header.py from any directory. r=mshal

--HG--
extra : rebase_source : 52c9ffea0628101ca651ca2fdad1ececbfeb8039

accessible/xpcom/AccEventGen.py

@@ -223,6 +223,6 @@ def gen_files(fd, conf_file, xpidllex, xpidlyacc):
     deps = set()
     conf, inc_dir = get_conf(conf_file)
     deps.update(print_header_file(fd, conf, inc_dir))
-    with open('xpcAccEvents.cpp', 'w') as cpp_fd:
+    with open(os.path.join(os.path.dirname(fd.name), 'xpcAccEvents.cpp'), 'w') as cpp_fd:
         deps.update(print_cpp_file(cpp_fd, conf, inc_dir))
     return deps

xpcom/idl-parser/xpidl/header.py

@@ -548,7 +548,7 @@ def write_interface(iface, fd):
 
 
 def main(outputfile):
-    cachedir = '.'
+    cachedir = os.path.dirname(outputfile.name if outputfile else '') or '.'
     if not os.path.isdir(cachedir):
         os.mkdir(cachedir)
     sys.path.append(cachedir)