Open Trace Format support library - compatibility symlinks

 OTF is a standard trace format used by several high-performance tools,
 using an ASCII encoding, which supports multiple streams. The libotf2
 provides support for reading/writing them.
 .
 This package contains compatibility symlinks to make -lotf2 link with
 libopen-trace-format2-dev. This should however be avoided and use
 pkg-config otf2 instead.