reduce level of log messages (Changaco#83)

closes Changaco#74

Author: MartinFalatic

libarchive/ffi.py

@@ -162,7 +162,7 @@ def ffi(name, argtypes, restype, errcheck=None):
     try:
         ffi('read_support_format_'+f_name, [c_archive_p], c_int, check_int)
     except AttributeError:  # pragma: no cover
-        logger.warning('read format "%s" is not supported' % f_name)
+        logger.info('read format "%s" is not supported' % f_name)
         READ_FORMATS.remove(f_name)
 
 READ_FILTERS = set((
@@ -173,7 +173,7 @@ def ffi(name, argtypes, restype, errcheck=None):
     try:
         ffi('read_support_filter_'+f_name, [c_archive_p], c_int, check_int)
     except AttributeError:  # pragma: no cover
-        logger.warning('read filter "%s" is not supported' % f_name)
+        logger.info('read filter "%s" is not supported' % f_name)
         READ_FILTERS.remove(f_name)
 
 ffi('read_open',
@@ -224,7 +224,7 @@ def ffi(name, argtypes, restype, errcheck=None):
     try:
         ffi('write_set_format_'+f_name, [c_archive_p], c_int, check_int)
     except AttributeError:  # pragma: no cover
-        logger.warning('write format "%s" is not supported' % f_name)
+        logger.info('write format "%s" is not supported' % f_name)
         WRITE_FORMATS.remove(f_name)
 
 WRITE_FILTERS = set((
@@ -235,7 +235,7 @@ def ffi(name, argtypes, restype, errcheck=None):
     try:
         ffi('write_add_filter_'+f_name, [c_archive_p], c_int, check_int)
     except AttributeError:  # pragma: no cover
-        logger.warning('write filter "%s" is not supported' % f_name)
+        logger.info('write filter "%s" is not supported' % f_name)
         WRITE_FILTERS.remove(f_name)
 
 ffi('write_open',