gcc: Add glibc.opt_lib to the library search path (#111830)
gcc: Add glibc.opt_lib to the library search path (#111830)

When brewed glibc is installed, add glibc.opt_lib to the library search path in specs.
makigumo/homebrew-core,makigumo/homebrew-core,Homebrew/homebrew-core,filcab/homebrew-core,chrisfinazzo/homebrew-core,Homebrew/homebrew-core,chrisfinazzo/homebrew-core,adam-moss/homebrew-core,stgraber/homebrew-core,lemzwerg/homebrew-core,lemzwerg/homebrew-core,filcab/homebrew-core,adam-moss/homebrew-core,nandub/homebrew-core,stgraber/homebrew-core,nandub/homebrew-core