Log Message:
Changes 2.1.3:
* library.mak: only run asm strip if ASMSTRIP flags are set
* configure: remove code that disables striping in the absence of some flags
* This more closely matches the actual use, also we use plain strip without \ 
these flags for striping
* avformat/utils/av_probe_input_buffer2: fix buffer passed to \ 
ffio_rewind_with_probe_data()
* avformat/utils/av_probe_input_buffer2: fix offset check
* avformat/utils/av_probe_input_buffer2: Fix pd.buf_size