Possible patch for sox build failure on 10.7

[Joshua Root]

On 2017-8-12 20:10 , Jan Stary wrote:
> On Aug 12 10:56:57, mojca at macports.org wrote:
>> On 12 August 2017 at 10:36, Jan Stary wrote:
>>>
>>> libtool: link: /usr/bin/grep -E -e "^(sox_.*|lsx_(check_read_params|(close|open)_dllibrary|(debug(_more|_most)?|fail|report|warn)_impl|eof|fail_errno|filelength|find_(enum_(text|value)|file_extension)|getopt(_init)?|lpc10_(create_(de|en)coder_state|(de|en)code)|raw(read|write)|read(_b_buf|buf|chars)|realloc|rewind|seeki|sigfigs3p?|strcasecmp|tell|unreadb|write(b|_b_buf|buf|s)))$" ".libs/libsox.exp" > ".libs/libsox.expT"
>>>
>>> Can someone on 10.7 please check that this is the failing grep line?
>>> (Not even in connection with SoX, just grep that regexp on anything.)
>>
>> Confirming.
> 
> Thank you I will ask upstream whether the regexp can be simplified
> (or is even up to date), to see if we can avoid the dependency on grep.

May I commit the workaround, given that a better fix doesn't seem to be 
happening right now?

- Josh