fluidsynth 1.1.11

• fix pkgconfig file for absolute paths (#347, thanks to @krop)
• add a cmake option for OSS support (#350, thanks to @Ne01eX)
• fix broken enable-midishare cmake option
• fix double free in fluid_midi_router (#352, thanks to @fulinux)
• prevent malicious soundfonts from causing buffer overflows (#354, thanks to @mawe42)
• avoid SF3 files to be loaded incorrectly (#354, thanks to @mawe42)
• fix an endless loop in fast file renderer (#367)