Also build/install taglib.pc when targetting windows
Also build/install taglib.pc when targetting windows

.pc file is notably used when cross-compiling windows software

black78/taglib,Distrotech/taglib,taglib/taglib,black78/taglib,MaxLeb/taglib,TsudaKageyu/taglib,i80and/taglib,taglib/taglib,davispuh/taglib,videolabs/taglib,dlz1123/taglib,MaxLeb/taglib,black78/taglib,Distrotech/taglib,pbhd/taglib,dlz1123/taglib,taglib/taglib,videolabs/taglib,davispuh/taglib,Distrotech/taglib,TsudaKageyu/taglib,videolabs/taglib,dlz1123/taglib,i80and/taglib,davispuh/taglib,pbhd/taglib,MaxLeb/taglib,i80and/taglib,pbhd/taglib,TsudaKageyu/taglib