[FFmpeg-cvslog] Put a space between string literals and macros.

ffmpeg | branch: release/2.7 | Chris Watkins | Tue Jul 7 10:40:27 2015 -0700| [151554e1eb86404fd973dbcf888c50d2d5a51ff5] | committer: Michael Niedermayer Put a space between string literals and macros. When compiling libavutil/internal.h as C++11, clang warns that a space is required between

[FFmpeg-cvslog] Put a space between string literals and macros.

ffmpeg | branch: master | Chris Watkins | Tue Jul 7 10:40:27 2015 -0700| [55e29ceec84aa498122576c1ae8a0fa1fab0b41e] | committer: Michael Niedermayer Put a space between string literals and macros. When compiling libavutil/internal.h as C++11, clang warns that a space is required between a str