File baselibs.conf of Package libpng15

libpng15-15
 obsoletes "libpng-<targettype> < <version>"
 provides "libpng-<targettype> = <version>"
libpng15-devel
 requires -libpng15-<targettype>
 requires "libpng15-15-<targettype> = <version>"
libpng15-compat-devel
 requires -libpng15-compat-<targettype>
 requires "libpng15-devel-<targettype> = <version>"